I hate what my mother in law does sometimes and when I mean does stuff I mean

She did homework with my son the other week it made me annoyed

She booked my partner in the doctor's before I could cause I didn't do it straight away

She speaks to me as though I'm her child

And she treats my son as if it's her son!

Am I going crazy or is this normal because I'm just letting everything subside but it's really annoying me.