Does anyone else feel like this?

I’m living at my husband’s family’s cottage for the summer. For some reason is bothers me when my mother in law is too lovey dovey and affectionate with my baby. It’s such a strange emotion to have but maybe I feel like she’s overstepping in certain situations?? I try to remind myself that she is his grandma, and of course she’s going to want to show her grandbaby love. Why does it annoy me?! I know I’m being irrational.