OP, as a mom/mil/gm, I'm appalled at the harsh treatment you have received at the hands of some of the posters here! Some of the harsher ones are generally reasonable ladies, too, so I don't understand, unless, somehow, your presentation gave them a bad impression. But the fact that MIL wouldn't stop feeding baby when you and dh told her to, would have been enough for me to decide "That's it! No way am I letting her babysit my child!" Her offering childcare is NOT kind or helpful if she isn't willing to follow your rules for your baby. She may mean well, but she wouldn't do well. Granted, as a nurse, I understand she feels she knows a lot. But then, she should know that some people believe in EBF, as this isn't so totally new. The fact that SHE obviously doesn't believe in it, does NOT make it ok for her to go against what you and dh have decided is best for YOUR and HIS child. IMO, she's very lucky she sees you and your family unit as often as she does - once a week or so is HARDLY "keeping her at arm's length." Some young parents would have cut back much more. I get that she's probably frustrated that she can't babysit and that you and dh are not thrilled to receive her advice, which, no doubt, is based on her nursing experience. But I can't really feel bad for her, as she does get to see dh and gc quite often and brought your resentment on herself. As far as "what steps" she would need to take for you to "trust her," I feel you've answered your own question. She needs to end the behaviors you described and begin respecting you and dh as adults and parents. The only place where you and I part company is that, at this point, I would set the boundaries myself in the way that agnurse describes. Though I agree that dh should do it, clearly, he's not going to. And no progress can possibly be made, imo, till somebody does. Maybe if dh sees you doing it and the world doesn't fall apart, he'll follow your example, after a while. Best of luck!