Bridal Shower Innvite Rules

So here is the story..

My husband’s niece is getting married, and the two mothers (MIL & my sister-in-law) are organizing a bridal shower. Each party is sending out their own invite for their side. So I volunteered to help my sister in law send out the invites for her daughter (my husband’s niece). When I saw the shower list I noticed that my mom or my sister in laws names were not on the invite. I also later realized that for her close relatives my husband’s sister (my SIL on my husbands side) was doing a phone invite as a more personable way to invite them to the shower. She never called my mom or my sister in law.

I know that she is inviting her daughters friends and their mom’s (who she doesn’t know to well). And she inviting her other sisters and their MIL’s to the shower. I briefly spoke to my husband that it was bothering me, that my family was not invited – and he too was surprised. My husband’s sister saw my sister in law (my brothers wife) recently during the holidays and they were all talking about the wedding, and still no bells went of for her to invite my SIL or mom.

The fact that my family isn’t invited to the shower makes me believe that they are not invited to the wedding. And my family is expecting an invite, because they are in-laws of her brother. Whether they come to wedding or shower is a different story. I feel really bad for my family and am upset by the fact that during my in laws family events, my family is frequently overlooked, and the other sisters entourage of in laws is always invited.

I don’t want to bring up to her attention because I really don’t want a pity invite, and its not in my nature to bring it up – I mean the fact that its an over sight says something for itself, maybe we are not as close as I thought we were.

So thoughts or suggestions on what I should do??