My mother seems to think she is going to be the star of the day. She is going this weekend to put her deposit on a dress that is more expensive than my gown. She keeps repeating that she is "the second most important person at the wedding." She is making demands regarding picking her dress before my MIL, and which order she should go in for makeup/hair (right before me so her makeup is the freshest because, again, she is the "second most important person at the wedding.") I just don't understand this sense of entitlement. I have been trying to ignore it, but it's really irking my fiance now as well. We have kept her away from our vendors thus far, but I am really concerned she is going to bring this diva attitude to our wedding and tell our vendors to do things we didn't tell them to do or monopolize our video footage. I'm also afraid she might give an unauthorized speech or do something else to make it seem like she is hosting the event (which she is not). Do I need to have a talk with her or should I just trust that everything will be okay the day of the wedding?