My dad has been married 5 yrs. They comingle finances. They are paying for half the wedding. My mother just got married a few months ago. She is paying the other half. We agreed beforehand over email the wording would be Mr & Mrs MY DAD and MY MOM WITH HER NEW LAST NAME blah blah blah.
Now the invitations are out, she is upset that my dad's wife is mentioned (in the form of MRS) in the invitation. She claims that she didn't notice the "AND MRS" part and would never have approved that. Now she feels lied to and is claiming she is not coming to the wedding. What do I do?
ETA: Dad's wife has helped a lot (organized photog and band, sent out STDs, organized cailligrapher, etc), mom's new husband is a nice guy but I have only met him a couple times and he is not participating financially or physically at all- this was also, I thought, already discussed with all parties and agreed upon.