One of my bridesmaids told me that she isn't sure if she will be able to be in the wedding after all (she had initially agreed back in April) because she is planning on getting pregnant in the next year and doesn't want to spend money on a dress she won't be able to wear (which I totally understand!). I told her that I really want her to be in if she can, and that she is welcome to wear a maternity dress in the same color if she would prefer. She says that she doesn't know if she would be comfortable, and wants to wait until March or April to make a decision on whether or not she can be in the wedding (to see if she has gotten pregnant). I respect her decision, but at the same time my wedding is in August and I feel like April is too late to order a BM dress or have to add another BM (I really want to keep the # at 6). Also, we want to print programs before then, with all the BP names. I don't want to kick her out, would it be rude to give her a deadline to decide?