mulvihill. i'm sorry that i shot mr. mulvihill.reviously. >> reporter: and then diana spoke publicly for the first time. >> it's so painful some people think that i have it in me to do this. i still care about greg and as much as he -- i did love him. i loved him a lot. i just hope that that reality, the reality, the higher reality of what happened, what we really intended comes out. i believe it will someday. >> reporter: weldon was sentenced to 50 years to life in prison, diana 26 to life. did you ever think that your friend diana could ever get wrapped up in a wild story like this? >> no. no, it's my worst nightmare. >> reporter: greg mulvihill now has full custody of their son. >> i've actually had a lot of heart to hearts with greg mulvihill, and i do generally think that he is a sweet, nice man and didn't deserve any of this. >> reporter: walden's wife lea is now a single parent, too. >> he shouldn't be in prison. he should be home. weldon is a beautiful person that my son should be able to have in his life. >> reporter: weld