AITAH for being angry at my mother in law

I found out my bf mom has been saying things behind my back and I’m angry but don’t know how to go about it, me (23f)and my bf (25m) have a child together and I found out that from the start she’s been telling him not to marry me and putting in his head not to get married also the second thing is that she complains about me being around too much and says I should “go with my family instead” which I find so weird because my family is MY daughter and my bf. So in her head she wants me to just have him and my daughter over but leave me at home cause why would I go with them so much? Is that not weird?