Etiquette

[Nirvana]

My sister's daughter in law , [my nephew's wife] is having a baby shower. Her sister sent out invitations with an email RSVP. I have two other sisters their invitations came addressed to their husband one of whom is deceased. Not to MRS but to their respective husband by first name. My sisters were a bit weirded out and claimed only to me, that their husbands won't be attending and they were not invited.

Tryong to fix this I sent an email to the person that was throwing the party as instructed to RSVP


Hello XXXX,
I plan to be at the baby shower. I am also writing because I am sure
this was a unintended mistake but 2 invitations were sent to my
brother in laws rather than their wives, one of whom died in
September. {XXXXXX XXXXXXX, XXXX XXXXXXX/deceased] I thought
maybe you would like to correct this by sending invitations made out
to XXXXXX XXXX and XXXXXX XXXXXX. Thanks for your consideration.

I received no response this was 2 weeks ago and neither did my sisters receive an altered invitation. They do not know that I wrote this person. This is going to be a big mess what do I do know?