My MOH asked me to develop a guest list for my shower and I shared this list with my future mother in law. I informed her that I was planning to invite both of grooms grandmothers but I wasn't sure about inviting his step grandmother (they don't really get along) and I wanted her opinion. She didn't answer my question about step grandmother but made it clear that all of FI's aunts and female cousins on both sides of his family expect to be invited and if I don't invite them all many people will have hurt feelings and be very upset. Most of these people live several hours away and in the 9 years FI and I have been together I have met most of them a total of 3 or 4 times. I explained to her that I had expected to have only our closest friends and family at shower but she is insisting. Having her throw an additional shower is not an option as she has already offered to host rehearsal dinner and then called FI claiming we didn't care about her and were only using her for her money for the dinner. She came to this conclusion when FI didn't give her a hug when he left her house after a short visit. If I invite these people I will have over 50 people at the shower and I don't think that is fair to my bridesmaids. Anyone have any advice about how to handle this?