Anonymous wrote:You need an invitation? If this is your SIL, shouldn't you be throwing the shower with your MIL? Maybe you didn't get invited because you didn't help. And because you prioritize work over the shower.
They don't sound like the rude party....
Not necessarily. Sounds like OP's brother is married to SIL. In which case, SIL's own blood relatives may be throwing her a shower. It's possible that OP and her mother (the SIL's in-laws) could also throw her a family shower on their side of the family. OP isn't rude.