We planned this party 2 months ago. We have been working non stop to get everything ready for it....and this morning, my SIL texts me and says she is going to bring a cake to celebrate her mom's birthday at our house since everyone will be there at the gathering (her mom's birthday is 7/5).
This rubbed me the wrong way, since 1. she told me this the day before, 2. it's not a party for her mom, 3. she didn't offer to help or contribute if we made it her mom's party as well.
She's done this twice before, without asking: she had her parents celebrate their 35th anniversary at our engagement party and her mom's birthday at another 4th of July party.
I told her I was sorry, but there are many guests coming who do not know her mom and that this was also the first event we were having at our new home.
Now I feel bad. What do y'all think, TQC? Am I being an a-hole? Is she? Or both of us :(