Am I in the wrong?

I’m 3 months pp and I’ve been diagnosed with ppd and ppa since having baby number 2

I’ve had some issues with my mother in law over stepping my boundaries with my baby

This weekend I have been invited to a family party but I don’t feel up to go as I know she will go against my wishes and pass my baby around like a toy even if I ask her not to

I’m probably going to have her call me and complain soon

Am I in the wrong should I just go and get on with it ?