Weddingbee boards

My fiance's sister is getting married one week before we are(it was planned this way).  She (and her fiance) are in our wedding party.  I am not in hers - though my fiance is.  I am hurt that I'm not a part of her bridal party because we have been friends for a long time and I'm already feeling left out of her big day.  I probably won't get to be in the wedding photos, I won't get to sit with my guy at dinner...I think she is doing this because she is mad at us for getting engaged after she did (my guy had plans to propose for a long time - it's just that they did it one month before we did..) and this is her slap in the face for me.

I'm really upset and really hurt and I don't feel like I can talk to her because I don't want to cause any trouble.  I know it's her bridal party is HER choice, but I'm really sad that she didn't chose to have me a part of it.  I felt like we had a good relationship before the engagements, but now I feel like she is resentful and everything is a competition with these weddings.

I feel like I have to be completely silent in this whole matter - my fiance's parents MUST know what is going on and I'm sure they talked to her about it.  But I can't say anything to them (even though we are quite close) but at the same time, I don't feel like I can outright ask her why I'm not in the bridal party.  Not being a bridesmaid in her wedding is my "elephant in the room" so to speak.  It's there, but everyone is pretending it's not.

I feel like we could have had a lot of fun being in each others bridal parties and helping each other out.  Instead it's awkward and uncomfortable - at least on my end.  I just feel so hurt. :( 

What would YOU do?

I posted this a while ago - just checking if it actually posted in here this time.