This might be a long story, but I need to provide some background so others can understand.

My mother is very socially active and charismatic. She has a ton of friends, and people love her. That being said, she prioritizes her social standing over real connections. She is the type of person that takes over any situation and needs to be the center of attention. Her best friend lives a few minutes down the road from me so she'll pass my house multiple times a week, but I won't see her for months at a time because she doesn't have time. When I do hear from her, it's because she needs something.

Me and my fiance are getting married very soon. We are traveling for the wedding and only a few people are invited, including my mother. When I fist invited her, she was excited, but she was excited because it quickly became a vacation opportunity for her. She was looking at restaurants, activities in the area, places to go, ect. We're renting a big house for the week and she invited herself to stay with us for that time which would afford her to do all the extra activities that she was looking at. My mother was calling me every couple days to discuss new places to go and agendas for the week. It started to stress my fiance and I out, so we put our foot down and told her that we will be staying in the house alone and that we would be busy throughout the week getting things ready for wedding so we really don't have time for all of that. Besides, it'll basically be our honeymoon as well. I didn't hear much from my mother after I told her that except for her telling me that she was changing her plans and that she will only be coming the day before the wedding and leaving the day after because she couldn't afford to be there longer. Besides that, she has only sent a couple text over the last few months asking things like have we changed our plans and are we still doing it. I just responded no and yes accordingly, and that was the end of the conversation.

Yesterday my mother sends me a more friendly text asking about my day and how I've been. I was honestly suspicious of her intent because I hadn't really spoken to her over the last couple months. I gave her short answers, and eventually she brings up what she was really texting me about. She hurt herself while out with a friend and she needed to have a small outpatient surgery. She asked me if I could take the day off to bring her. The procedure is scheduled for 2 days before we leave which meant I would have to take off an extra day from work right before my previous scheduled days off for the wedding. I was hesitant to say yes at first, but my focus is honestly on the wedding more than work anyway. It's actually a good excuse to take off an extra day before traveling, so I said I would.

After finding this out, and agreeing to take her, I let my fiance know. She was immediately annoyed. She brought up the fact that she could care less about anything else up to this point and that it seemed awfully coincidental that this would happen just before we leave. My fiancé's concern is that my mother was setting something up to take the attention away from our wedding and put it on herself.

I didn't argue my fiancé's points because I don't necessarily disagree, but she's now annoyed at me for agreeing to take the day to take her. I tried to explain that it was more because it was a good excuse to take the day off than it was for my mother's sake. She insist that it doesn't matter because my mother will see it as getting what she wanted, the attention on her, and she thinks my mother will uses this as way to cause problems, and maybe she will, but im not concerned because the worse that happens is my mother doesn't go.

My fiance is still annoyed about it and still wants me to tell my mother I can't do it, but I refuse to take it back now. AITH?