He told her that some of her comments are rude and that words can have an effect on someone. I don't think he threw me under the bus, but then again, he did not tell me verbatim what he said to her and how it was said. She does know I am/was upset. I know his intentions are in the right place. He's trying to correct his mother. She says all sorts of inappropriate things, including semi-racist remarks.

Yes, there likely IS awkwardness because of the prior texts I had sent his mom while we were separating. I had point blank told her that her son was abusive towards me. But she thinks her son is perfect, and that I am "crazy" so that's that. He can do no wrong, so I must be wrong. Yes, I am sure she resents that, but she's been otherwise cordial to me and tells me she loves me kind of thing. She also gave me a very expensive diamond watch of hers that she no longer wears, after we had gotten back together. If she resented me THAT much, I don't think she would have made such a gesture.

I likely won't be with her again until Friday evening - that is IF I am invited to join them for dinner before she leaves.

She cannot move in with us anyways. We have a two-story apartment, and she cannot climb stairs because of the pain in her legs. So there's no chance of that happening regardless.