Boyfriends Mother trying to control babyshower😔

Okay so I want a Jack&Jill shower I had a venue b/c it's 15-20 people max that will be attending...she insists it be at her home on her huge deck which is nice b/c it's free we save money. She says no men allowed b/c she doesn't trust them or know them which it was going to be whoever her son invited😐 I would still have to get chairs for guests when my venue came with it all. Then she insist she makes my cake😕 I wanted to pick my own😒she also says 15-20 people is too many which is why I chose the venue from the jump...TBH I don't want one anymore just a welcome home baby in my new home but we move 1st week of July & my due date is July 4th😱 someone help I want to hear ur opinions on this