I think the real test will be if she tries to be intimate. SIL hinted that this was one of the things PW told W. That not connecting in that way would only make things worse.
At this point, I don't know if I want to go there if I know she is doing it because she thinks she has too. That is just more resentment for me to deal with later.
You're right though, I really have to focus on not believing anything I hear and only 1/2 of what I see.