family drama-baby shower.

Elizabeth
So I have two older sisters. My oldest has usually been my closest...as she's always been a bit more down to earth and my other sister has always been a bit... "oh holier than thou"... anyways. 
They're planning my baby shower. Both live in different states. It took me 4 years to get pregnant after a miscarriage and my oldest sister knew how much the m/c killed me inside and the fact that this baby means more than the world to me...but she hasn't been there for me at all. She recently found a hobby that's taken over her life and has kinda neglected the whole family (never replies to texts/phone calls/etc) and apparently hasn't helped my other sister much at all with planning, which I knew without anyone telling me, I could see it...and my other sister has bought me a bunch of stuff and has been asking how I am and basically been the shoulder I needed at times since I don't have any friends. 
My shower is in a week and a half and my (now bitchy) sister is well...being a bitch. To my mom, not me. But it's over her not staying at my moms house (where me and my husband currently live for the time being) it just seems like she's pushing away from our family and who knows...since she doesn't talk to anyone anymore. It hurt my feelings since the whole point of her coming was for my shower but at this point I just don't care, I just don't want the drama. It just sucks since she was supposed to be my go to sister since she also had fertility issues. 
Just a rant...