This is INSANE. As a new mom, I am seething for you. She is unwell, and I would honestly get a restraining order. She obviously has no self control and doesn’t care about your feelings or the well-being of your child. She POISONED your child on multiple occasions WTF.

I’m a pretty upfront person (and I know you said you’re not big on confrontation), but I would write out every single thing she has done to you during your pregnancy and to your child after birth and list them as reasons why she can no longer be in the child’s life unless she seeks help. She could really harm your child if she doesn’t stop being psychotic.

Good luck to you. I can’t even imagine.