Are grandparents “entitled” to their grandkids?

I’m a bit torn in my feelings towards this. I am very frightened of my MIL, she is a scary woman and I have unbelievable anxiety when I have to meet with her. Like, I won’t poop the day before or the day of when I see her and I will physically shake and shut down.

But, I had a baby and she is my son’s grandma so when I’m feeling mentally healthy after from seeing her last, I will call her and ask if she wants to spend time with him.

She’s going to be retiring in two weeks and she keeps talking about how she’s going to take my son and come over everyday to see him and call him, yada, yada, yada.

Anyway, this frightens me because she is toxic and verbally abusive (hence my anxiety) and I fear my son will get that brute end of her neuroticism. But, I can’t protect him forever from her. I just also need my breaks to recollect myself after I’ve seen her and once she retires and does visit everyday, I worry I will become run-down and hurt myself. I’ve thought of suicide because of this woman.

What I’m trying to get at is, I wonder if I’m being bratty about getting upset that my MIL seems to think she is entitled to seeing my son? Is that a normal thing for grandparents to feel and I should let it go or should I try to make boundaries with her?