Is it time to go NC?

This weekend was my son’s second birthday party. Leading up to it we had a serious bit of drama and then still told MIL she could come for the birthday party. She was trying to come before and have a private little party for herself to play with my son and fulfill her weird grandma fantasy. FIL has decided to not talk to us so he was not invited unless he would discuss with us our boundaries.
She later admitted she doesnt like coming to events because it will all be people she doesnt know and he’ll be distracted playing with his friends…..I know, incredibly out of touch, my child is clearly not a person and its very well communicated that she has no ability to see him as his own being. Shes voiced upset that the time is short before he has his own friends and wont want to hang with grandma anymore.

Anyway, she sulks around and makes some backhanded comments to my friends, even made gross judgemental comments about one of my friends kids. All of this I heard about from a friend after the fact.

The next day, while the kids are napping, we talk to her. She does the typical deflecting, comparing, crying. She never takes accountability, eventually runs out of excuses and then DH just moves on and says we need to go get the kids up.

We come in and my son is sitting with my mom having a snack, he gets excited to see his dad and asks him to read him a book. Instead my husband tries to tell him to sit with MIL to read it. He says no. DH keeps pushing him to. Then MIL says, oh I want to read this book, and starts shoving it in his face. All of this is going on and im telling DH, no he doesnt want to.

I got very annoyed with this because we all just had this talk where the whole point was giving our kids autonomy and they’re not little dolls. Then DH immediately tries to make nice with her by offering up our son.

He’s clearly not out of the fog yet. He’s done alot of work and sees the issues but he cant seem to break it when shes around.
He continued to treat her like a little princess whenever she beckoned. I kept my kids far away from it. Then she left and on her way out she said to my infant “goodbye son”.

She obviously doesn’t get it, doesnt care to, and never will. I’m considering the best move now is to go NC until DH can make some real progress where he isnt so easily manipulated in her presence. Or maybe we limit visits to public meetups. I think for a while I can use the excuse that FIL isnt welcomed until he talks with us, but these talks are obviously not productive and were continuing to attempt a relationship for my DHs sake.

Thoughts?