Hi A. :)
I really feel for you here. I've been with my husband for nearly 13 years, married for over 6 of those, and my MIL is a handful too. She has let my older daughter ride in a car seat without being strapped in because she didn't know how to adjust it and felt that having my SIL be on the ready to fly across my daughter's lap in the incident of an accident. She also left my younger daughter in a swing unbuckled because she "couldn't figure it out". She "keeps score" of which set of grandparents gets more time, and if she sees our car at my parents' house (who live down the street from them) we get the third degree followed by the self-pity-pouty-guilt-trip. The only thing I can't see her doing that's on your list is giving my girls back to me when they cry - no, in her case, she tries to step in and even take them from ME when they cry, like I'm some kind of inept mother who can't comfort my own children.
My MIL has caused a lot of problems, too numerous to name here.
I have spoken to my hubby about this, and he knows. Now, if all this had happened in the first four years of our relationship, I would have been the evil one - how dare I criticize his mother who bore him and raised him and loves him like no other woman. But he's grown out of that. So it's good he knows how I feel. Still, it's his mom, and no matter what he does love her, so it will always be at least a little bit of a delicate situation coming from me. But we talk about it, and it's important to talk about it with your DH.
You're not wrong for feeling this way though. Mothering instincts are extremely powerful and acute, and your first instinct will always be to protect your baby. Sometimes it is important to let go a tiny bit, but until you feel more comfortable, do what you need to do.
Also, something to keep in mind on her behalf, is that she may sense that you're tense, and may also be so scared of doing the wrong thing she overlooks stuff that would be automatic to you and I. If she's a new grandma, she's not used to all our current-day rules, and may have some anxiety about it. So if you talk with your husband, you may find that you can cut her some slack.
Or maybe not ;-)
Good luck to you - if you find the exact right answer, I do hope you'll let me know because I've had a heck of a time trying to figure it out for myself!