!Help! Need Advice and encouragement!

[stark648]

Wife "blew up" at daughter yesterday, but before she left the house, daughter had a majorly deep discussion with her. In fact, daughter had run out to truck to make sure wife didn't leave on bad note. My daughter-15 was talking to W as the adult in the conversation. She told her to "just shut up and listen". Daughter said that she loved her mom and would love her no matter what, even if she didn't agree with what she was doing. She also talked to her about Mom's fear of death, relationship w/God, mom going back to school, and told her not to worry about daughter making same mistakes as she did in her youth.(W had been worried about d screwing up with d's boyfriend, running away, drinking, etc.) In the middle of the original argument, W had called me and was irate. I had told her that d was entitled to opinion, but that she was trying to be respectful to mom. W was griping about how I wasn't perfect, and had made mistakes, too. I said yes, but nothing like adultery!(She hung up) Later she was trying to call and apologize. She had to text and leave voicemail b/c I wouldn't answer her. She was crying and saying she "didn't want us to be like this"---
I am trying to do an emotional cut-off of sorts. She can't expect us to be all "ok" and "close friends" like we were before she moved in w/OM. She can't have it both ways! But-I have to have text contact because of kids' activities, etc.

Any advice? does this cut-off sound right? She seems to be pursuing me, now...???