Help Identifying Episode

Hello everyone - I was wondering whether someone could help me find one of my favorite episodes of this show.

As best I can recall, it involved the death of a schizophrenic woman who was originally from New Jersey, and mother to 5 or so adult children, who had moved to Florida. She was generally homeless, but was living out of a motel room, and had been been strangled and covered with a sheet and left with an open bible on her chest. The guy who did it was her lover/roommate and confessed he strangled her out of frustration, because she was keeping him waiting too long for sex while fixing her makeup and hair in the bathroom. He was older, probably mentally ill as well, and seemingly repentant about the whole episode.

I've read through many of the episode guides, but apparently, I keep missing the one that this was in.