My fiance and I wanted to throw an intimate engagement party just our immediate families to have a small dinner to get to know one another. My family consists of just 5 but he has 4 brothers and sisters whom are all married and have children, they total 11. I was ok with the fact their group is so much bigger than mine bc it is just is immediate family. However my mother was not. She made a Hugh deal about and demanded she be able to invite more ppl (aunts and uncles) so the groups could be even numbers. I tired so hard to explain to my mother that we just couldn't help that his family is bigger than ours and that extended family was not invited to this event but they would be to other functions. In a stage Worthy momzilla tantrum she said she wanted no involvement and would not attend bc she was embarrassed of "offending" our family. Ultimately in the end the situation stressed me out so much we canceled the party. Now I feel resentment towards her bc of this. Am I wrong?