How to bow out of a wedding you disapprove of

[Specky]

The wedding isn't until November?  This is January, so 9+ months before the event, and more than plenty of time for a decision change.  She should back out politely, but she should back out now if she doesn't want to participate.  No JADE necessary. 

[jmarvellous]

I think she should set firm boundaries, including budgetary and time-wise. And stick to them.

She shouldn't commit to more than buying a dress and being there for a rehearsal and wedding. None of the craftsy stuff or other wedding planning or extra parties except a shower if there is one, maybe a bachelorette.

But I agree with some that backing out now would likely irreparably harm a close relationship between her SO and his close friend. I don't think it's right to do that right now.