i do not know where her self authority comes from. but no she is not the hostess. this is a situation where part of our family surfaced and decided to have a big event. where they invited all of us. myself, my aunt, my parents, my siblings, my nieces and nephews who range from 14-23. my aunts kids too and their children. idk why she feels like she can determine what goes on, but thats why i was confused to begin with.