Rant: Am I wrong?

Am I wrong for not wanting my husband’s grandma to hold my son?

Backstory: When my son was a week old(he’s now 7 weeks old) my husband and his grandma got into an argument. She happened to be holding the baby and when they started arguing she roughly tossed my son into my arms. I barely caught him. If I haven’t been so quick to react he would have hit the floor. I was livid. I don’t think she has the right to be rough with my child just because she’s mad. So I haven’t allowed her to hold him again.

Another reason I don’t want her holding him is because she refuses to give him back. He could be screaming and turning red but she still won’t give him to me. It pisses me off. I can’t stand her. She doesn’t respect me as his mother and she thinks she can do whatever she wants with him without asking permission.