. >> reporter: and 14 years ago her new husband, singer-songwriter marc cohn. they married in 2002. you know his song "walking in memphis." and her favorite song, "medicine man." >> i love that song. >> reporter: for the first time she confided to someone her deep insecurities. he calmed her anxieties by singing her to sleep. but even before they married he noticed she was also drinking at night. >> he thought i drank too much. and i remember him, he was angry when he said it. and grabbing my arm and saying, "you have a problem with alcohol." and that just made me really mad. >> reporter: but it also got her attention. and she says she did control her drinking as she took care of son zach, then son sam. and continued to work hard at her job, once even through a miscarriage. and after the death of our were named co-anchors of "world news tonight." but 27 days after the broadcast began, bob was almost killed by an ied explosion in iraq. >> it was devastating. devastating. to everybody who worked there, i felt like i was in a hurricane of life. >> reporter: she says she tried to contin

her ex-husband musician marc cohn is est known for this ballad. ? walking in memphis ? >> cohn supported her through stints in rehab. her drinking deepening cracks in their marriage. >> it made all the real problems we needed to discuss and work through frivolous in comparison. you know, what do you want to talk about? why don't you ask me about how my day is or why don't you support me more? why are you drink twwg bottles of chardonnay every night? >> vargas, who says she is two years sober, shares her journey in a new memoir "between others to get help. >> it doesn't matter how much you have or how little you have. it didn't matter. it leveled me. i lost sight of everything. everything. >> it's beautiful that she's back on hee feet now. let's keep moving. there's only one person who was in the house the night jonbenet ramsey was murdered who we have never heard from. her brother burk. dr. phil scored the exclusive interview with a now grown-up burk ramsey. >> my mom, bursting in my room really frantic saeg "oh, my gosh, oh, my gosh, oh my gosh." running around my room

in singer-songwriter marc cohn. you know his song "walking in memphis." ? when i was walking in memphis ? she says she did control her drinking as she was taking care of their two sons, zack and sam. but her drinking was causing added tension in their marriage. >> he thought i drank too much. >> reporter: and so she began a telltale pattern, keeping the amount a secret. and even hiding wine under her bathroom sink. >> looking at myself in the am. sneaking into my own bathroom to gulp down a half cup of wine so i can get through another hour feeling good. >> reporter: and then came the uncontrolled binges that she couldn't hide from her family in 2012. a very low point. >> that was our big vacation. and my idea of a vacation was to empty the minibar by drinking everything in it. >> reporter: her younger son, sam, finds her in the h and i do vividly remember like one afternoon sam standing by my head in the bed saying, "mommy, when are you going to get up?" i would die for my children, diane. but i couldn't stop drinking for my children. >> reporter: after th

her ex-husband musician marc cohn is est known for this ballad. ? walking in memphis ? stints in rehab. her drinking deepening cracks in their marriage. >> it madele re pblems needed to discuss and work through frivolous in comparison. you know, what do you want to talk about? why't ask me about how my day is or why don't you support me more? why are you drink twwg bottles of chardonnay every night? >> vargas, who says she is two years sober, shares her journey in aew memoir "beten breaths." she's hoping it will inspire others to get help. >> it doesn't matter how much you have how it didn't matter. it leveled me. i lost sightea a now burkramsey. my mom, burstin room s"oh, my my sh, oh my go." running around my room looking for jonbenet. >> burk ramsey was on 9 years old when his sister jonbenet was all the years since he' bout it publicw. ne t>> the i remember was om andhining a flashlight. my ldid you convince burk, jonbenet's brother, to do this interview? >> you know, it's the 20-year anniversary. his thinking was if that's going to happen i want to control the narr

and ex-wife of musician marc cohn. as her marriage was crumbling, she turned to wine for including her family 124040 ev - i would stop on my way home from work, you know and have a glass of wine or two at a bar and then ds - alone? ev - alone, feeling really pathetic you know? i would actually pretend to talk to somebody on my cell phone but you know 'oh no, oh its ok, oh no im- im just waiting here for you. no problem, take your time, ill be right h--' you know? like this whole facade 8 seconds eventually a couple glasses became entire bottles of and her husband knew. deepening the cracks that she says had already begun to develop in their marriage elizabeth vargas: 14:10:36;06and it made all the real problems we needed to discuss and work through frivolous in comparison. you know? "what do you wanna talk about?" "why don't you ask me about how my day is? or what-- (chuckle) you know, why don't you support me more?" when, "why are you drinking-- two bottles of chardonnay every night?" you know? i've just gone and chan

. >> reporter: tonight marc cohn has issued a statement, and we'll post it online. but he says, as always, he supports elizabeth in her recovery and that the two of them are working together to be loving parents to their two incredible boys. and coming up next, what elizabeth has learned about staying sober. and what i learned i shouldn't ask.purple to their homecoming tonight to spread awareness about suicide after an incident at their school today. and find out what happens next after mixed decisions today regarding the bakken oil pipeline. kcrg t-v nine news at 10 is o your forks. endless shrimp is back at red lobster. that means you get to try as much as you want... ...of whatever flavors are calling your name. seriously. like new garlic sriracha-grilled shrimp. it's a little spice... ...a little sizzle... ...and a lot just right. and try new parmesan peppercorn shrimp. helloooo crispy goodness. and the classic... ...handcrafted shrimp scampi... ...you can't get enough of? still gonna floor you. it may be called endless... ...but that doesn't mean it'll last. ma

a seasoned reporter, elizabeth beautiful boys, sam and zachary, and ex-wife of musician marc cohn. as her marriage was crumbling she turned to wine for consolation, a secret she tried to hide from everyone including her family. >> i would stop on my way home from work, you know, and have a glass of wine or two at a bar and then -- >> alone. >> alone feeling really pathetic, you know, i would actually -- i would actually pretend to talk to somebody on my cell phone. oh, it's okay. oh, no, i'm just here waiting for you. no problem, take your time. i'll be right -- you know, like this whole facade. >> reporter: eventually a couple of glasses became entire bottles of wine, and her husband knew, deepening the cracks that she sars had already begun to develop in their marriage. >> and it made all the real problems we needed to discuss and work through frivolous in comparison. you know, what do you want to talk about? why don't you ask me how my day is, and why don't you support me more when why are you drinking you know, i've just gone and changed the narrative in a pretty dramatic and d