I don’t trust my stepmom with my baby

My dad and stepmother have been together about 5 years, married about 2. And I don’t trust her. I’m a pretty good judge of character and just don’t get a good feeling about her and I never have.

She was never able to have children, and idk if that has something to do with it, but she is way different around me and my siblings vs her nieces/nephews.

Anyway, a few things have happened in the past to where I don’t trust her and I don’t want her around/alone with my baby.

1. A few years ago, there was a situation where she randomly freaked out on me and my younger sister (I was 24 at the time and my sister was 17), during this freak out she was screaming and cussing at us for literally no reason then as I went to get my belongings (we were going to spend the weekend at their house) she tried to push me down the stairs.

2. There was an occasion where she stole money from my dad. Then it “randomly” appeared again a week later.

3. A few weeks after I told everyone I was pregnant, I went to their house for a bbq, on several occasions she was purposely blowing cigarette smoke in my direction.

4. My dad has told me several times that “he’s not happy but at his age he really doesn’t want to be alone and that they will figure it out”

5. I’m not allowed to have alone time with my dad. My younger sister and older brother can, but any time I call him she is on speakerphone right there. And anytime I invite him anywhere, she’s always there. And even mentioned that she’s not okay with us spending time together alone. Like, he’s my dad wtf.

Anyway, with all of this being said, I don’t trust her. Or like her. I want so badly for my father to have a relationship with his grandchild. But I don’t want her to be any part of it. I don’t want her holding or touching or feeding my baby. How do I go about placing these boundaries while still making sure my dad gets quality time with his grandchild? I’m genuinely concerned for the safety of my baby around her or I wouldn’t be so uptight about it. But I know my dad doesn’t have a whole lot of time left on this world and I don’t want to not let him see his grandchild just because of her.