grandparents, judith and harold harper were waving good-bye to their care-free golden years.were full-time parents again. >> i agreed from the first day that i would take care of her, not know whing what kind of sta she was going to be in or mental state. >> reporter: erica's father had never been a part of her life, so a court granted them full custody of erica and her baby sister. >> reporter: you worked your whole lives to kick back and put your feet up? that's not for you? >> it doesn't bother me in the least. >> it didn't turn out like i thought because of the children and stuff. >> reporter: four years before the shootings, harold retired from his long-time meatpacking job, expecting to ride his harley into the sunset. >> i had a california trip. i had been into canada, most everywhere. well, that had to stop. >> he knows i couldn't maintain these children without him. >> i don't want her to. i love those little kids. >> i love my grandparents, they are the best, ever. >> reporter: do you think they sacrificed a lot to do this? >> yeah, my grandpa loves his harley. >> b