So when FI and I first got engaged I chose not to ask my younger sister to be a bridesmaid because I felt she would only give me a hard time about everything. My sister is pretty selfish, and can be very cruel at times. I know this sounds like a normal sisterly quarrell but it's more than that. I felt that if I asked my sister she would bail weeks before the wedding among other things.
But I felt very guilty, she is my sister and she is an adult and maybe she would be what I needed her to be. So I asked her and have regretted it ever since. I havent asked much of her, only that she try on dresses. She fought with me over the dress fittings saying that she couldnt fit them into her schedule, then when she finally went to a fitting she told me outright that she wasn't going to wear the dress becuase it was ugly. She insists on wearing stiletto heels when the wedding ceremony is outside on GRASS. Its wearing me down because she told me she WANTED to do this for me but hasn't really acted like it. I really regret asking her and I can't really say anything to her because my family will come down on me about it. I got a 20 minute lecture from my aunt becuase I didn't ask my sister in the first place. I can't trust or depend on my sister even though I wish I could.