I got married a year ago and my sister didn't seem very interested. She attended one dress shopping appointment (of about ten, arranged a month (or more) in advance). When I asked her opinion on suppliers she didn't offer much and basically said it's up to me.
After I said to another family member I was disappointed my sister didn't want to be more involved or help, they told me she was jealous and had told them she wished she was getting married.
On my wedding day, she was a bridesmaid (my parents didn't give me a choice) and did nothing. She looked glum in all the photos of the day, she kept out of the way with her boyfriend and I barely saw her (we had a fairly small wedding). She left it to my other bridesmaid to do everything. Ever since I've just felt really disappointed by her behaviour.
Now she's getting married and is expecting me to be involved, excited and to come to loads of events with her (she didn't come to any venues or fairs etc with me). I feel a bit annoyed as she really wasnt there for me or supportive. I've been told I'm a bridesmaid (she didn't ask me, but I really don't want to be).
AIBU to not want to be too involved? She's difficult to talk to as she just gets upset if I say anything 'bad' and then won't talk to me.