Hmmm could you actually set up a time to speak to your brother & be totally honest about how you feel (being careful not to sound like you want to break them up) more that your worried that if they don't sort the underlying issues now, you won't be able to support him if another issue arises & therefore feeling that a bridesmaid is not an appropriate role for you... But that you really hope they can get through this & you'd like to offer your support...
Then from there dealing with her but I don't think she's your biggest issue... You need to tread carefully with your brother. My DH hardly talks to his family anymore...


FIRST CYCLE FEB/MAR 2012
IVF ICSI ANTAGONIST
BFP - but sadly miscarried @ 6 weeks.....