ugh I gotta rant for a minute ladies ...so my husband and his brother are really close however…

ugh I gotta rant for a minute ladies ...so my husband and his brother are really close however neither of us get along well with our sister n law, she is certified crazy for one lol but she is down right mean and she treats his brother horrible which I get it that's on him he chooses to stay with her for their children anyway we had invited them to the diaper party today about seven weeks ago, they call last night after everything is ready measured out for who rsvp'd and say last minute they are coming! now its at my husbands aunt house where we hold all the family events and they made a point to not come for thanksgiving or Christmas this year simple because she does not like me, so I been racking my brain trying figure out why you couldn't bring the kids here for the holidays this year yet you wanna come to my diaper party ?! I can't help but to think she is coming for two reasons, 1.) to have the attention on her and her kids no one in family has seen or heard from 2.) to ruin my day! I'm so upset and I'm trying not to be and just think positive and enjoy my day but these pregnancy hormones don't help ease my mind ...any suggestions ladies ?! T.I.A !