Okay, get ready for a long story!
My brother-in-law is getting married in 5 months. I met his fiancee at Thanksgiving who asked me to be her bridesmaid (we hit it off really well). My husband is a graduate student, so she kindly offered to pay for my dress and such. About 3 weeks ago, I called her about the dress and she told me she had no recollection of offering to pay. I told her it was fine and I could scrape the money together for the $300 dress. She then told me my 5 month old, only breastfed son could not attend the ceremony. My husband is the Best Man so he can't watch our son if we are standing at the altar. The bride told me that she arranged babysitting at the synagogue and the ceremony would be only 20-30 minutes, and he would be able to come with me to the informal reception. I told her this was also fine, not a problem. Then she dropped a bombshell yesterday.
Not only did I need to buy a new dress (she changed her colors) but she also changed the reception venue to be a formal sit-down dinner. My son can no longer attend and I need to find alternative care for him. I asked her if I could just peek into the reception and leave after 1/2 an hour or so because my son is totally breastfed and can't go very long without his mommy. She told me this was unacceptable because the reception is a 4 hour long event and very formal.
As much as I don't want to hurt our new family relationships, I can't leave my son for 4 hours with a stranger in a city I've never been to. I want to gracefully back out of the wedding, but I don't know how! I don't want to hurt anyones feelings, but the bride is being inconsiderate of my situation.
Please help!!