As the title states... The short version is, when I got engaged my FH set it up so that we had a party at our apartment with a few close friends immediately after we got engaged, which I totally loved and had so much fun! He asked two of my friends to help set it up (they live nearby) and they got decorations and helped setup as well as two other friends of mine who came and helped day of as well. The four friends are the girls I want to choose as bridesmaids (all part of a friend group), but one of the girls Caroline sees herself as my "closest" friend, which she definitely used to be. She also was a major player in planning the party (not that I was aware until it was happening) and seemed to want people to know that she took a lot of ownership over it. She's changed a lot and is not always the most "well behaved" or reliable friend. She sometimes comes through 100% but other times can be really flakey, and in situations involving alcohol has been known to drink way too much and they act like it never happened/act like she has no clue why it happened.
I have another friend Emily who I've gotten closer with over the years and we have a very chill relationship and get along really well. We definitely make time for each other, and I am always at ease and enjoy myself when I'm with her.
So back to the party, Caroline (after a few drinks) straight up says to me "I'm the maid of honor, right?" while i'm talking to her and Emily. In response, (I know I messed up here) said yeah! I was so overwhelmed with appreciation and emotion with everything with the day, and this was literally right after I got engaged. I know I messed up but I would really prefer to ask Emily to be MOH, and even at the party she was like (in response to Caroline asking if she was MOH) said "listen whatever you want to do!" in regards to bridesmaids. I'm mad at myself for saying this to Caroline but I also am sort of frustrated that she put me on the spot like that in that moment. Is there a way to choose the friend I actually want to be MOH without it blowing up in my face? Is it fair for me to be annoyed that she asked if she was MOH? I would still ask her to be a BM but am worried she's going to be really offended, as I don't think she likes Emily as much as I do and that might add to the offense she may feel. Thanks in advance everyone, I feel like an idiot.
Note, the reason why I want to pick the friend group is because I have no sisters or friends from childhood or anything. Also FH's family is not an option for other reasons (not bad, just not a real option)