My FMIL really hurt my feelings/pissed me off this weekend and I need to know how to address the situation. She is throwing me one shower in the state where she lives for my FIs family, and my sister is throwing a second one in my home state for my family members. This is fine, but the trouble started when my sister emailed my FMIL to let her know a few details about the shower she was throwing including letting her know that she was doing a "Lilly Pulitzer" theme and decorating in pink and green since its my favorite.
My FMIL somehow accidentally forwarded me a text message convo she had with a friend after revieving the email bashing my sister wanting to use a theme, bashing that anyone would care what color the decorations were, making fun of Lilly Pulitzer even though I love her designs, making fun of me, etc. She meant to send me a question her friend had for me and sent me their entire rude conversation in an email instead. I was crushed that she would mock me and my sister (who is just trying to do a nice thing for me) with her friend. I showed my FI who called her and let her know what she had done and that I was upset and she said she would apologize. She hasn't yet and quite frankly I am very upset that she is talking behind my back in this way since we have always been very close. Should I just wait and see if she ever apologizes or try and address this with her?