ugh grandmother's

I swear my boyfriend's mom doesn't understand the meaning of no she is always doing things to piss me off. like today I get home with my bfs from being out of town for his work and she tells me the baby needs a bath. I told her I'm giving her one before bed because she sleeps better but she does it anyways. she pisses me off that's my time with her I love giving my baby girl a bath and washing her. Its my thing and it's special to me. she knows it makes me mad. she just doesn't get it does she. I feel like punching her in her fat face. idk what to do. I feel like being away way the best time ever. ugh I feel like screaming she just doesn't get it so all.