Does anyone here have a passive aggressive mother in law? She was a shitty mom to my husband but now…

Does anyone here have a passive aggressive mother in law? She was a shitty mom to my husband but now she wants to redeem herself and buy her way into my baby boy’s life..... I can’t stand it. She’s manipulative and plays mind games on me and my husband. Basically a really old “Mean Girl”. My husband doesn’t even see it but of course I can. She bought a crib and made a nursery in her house for my son. She better not even think I’m letting him stay there. In fact I don’t even want him visiting without my supervision. Chances are me and my husband will fight over this but if I play my cards right and stay one step ahead of her it should be ok right? I should also mention she is an EXPERT at playing victim. She’ll start weeping crocodile tears and even fake faint and have to rush to the hospital (I should mention her health is just fine....)