Support & infidelity

hi, so we are members and my kids are too. My daughter was made aware that her husband has been cheating. There are lots of allegations against him and he got let go from his job for allegations of SA. He’s claiming it wasn’t. They have kids together as well. Idk how to best support her. Should i tell her to stay? To leave? He said these women came onto him. But idk how i would be a good mom encouraging my daughter to stay with someone like this. He’s saying he would never have gone all the way with these people. But lots of women have said that he’s been on dating apps, etc.

What should I do? Should I have her talk to the bishop? Seek therapy? Move home. Anything helps. I guess I’ve kind of lost it considering I’m on Reddit. lol