he didn't actually kill nancy pfister he wrote.h i was getting out. it should've been a, a great time. i can't believe he's having to do this. this system is sick. it's, you know, messed up. >> reporter: three days later, june twentieth, dr. trey styler formally pleaded guilty to second degree murder and was sentenced to twenty years in prison. considering his health and age it was almost certainly was a life sentence. that same day the da dropped charges against kathy carpenter and she walked out jail. a free woman. >> i was very grateful, very thankful. and i felt god answered my prayers. and um but at the same time, it was still scary. i'm leaving jail after being locked up. what will people think? how will i be judged? >> reporter: she is grateful, scared, also sad. >> but there was sorrow for still thinking of the loss of nancy. and that he did something like this, that he did it, you know, that was still hurtful. >> reporter: but nancy styler added a bitter anger to her whirlwind of grief and relief. if trey was innocent, as