I just got a text from one of my bridesmaids saying she is sorry she can't attend my bachelorette party. Her husband, which is one of our groomsmen, surprised her for her birthday with tickets to visit her sister in Florida during the same time as my bachelorette party. She apparently forgot to put on their calendar that she already had plans. She also said she hopes I am okay with her still attending my fiance's bachelor party since they are all really good friends which is how I met her to begin with. The groomswoman loves the idea of her attending so she isn't the only girl. It definitely isn't mandatory that anyone attends my bachelorette party, but I am upset that she would still plan on going to my fiance's. He thinks I am overreacting and I should just tell her it is perfectly fine even though that isn't how I feel at all. I can't move the party as one of the other bridesmaids is flying in for my party and already bought her tickets. Do you think I am wrong for being upset or how would you handle this situation?