Rant: ok ladies my SO's mom is being very inconsiderate about everything as far as my baby…

Rant: ok ladies my SO's mom is being very inconsiderate about everything as far as my baby shower...all i asked her was for 2 things....to have it on a specific date and let my sister help but she has booked the venue for a different date than i asked for and she has not included my sister to help....she didnt even know my SO's mom had started planning because my sister lives in NC and we live in MD and its really pissing me off...im trying to be nice for my SO's sake but im gonna end up cussing her out...like seriously I've been nice for too long