Baby shower drama!!!

Kelly
My sister told me and was SOOO excited to throw me my baby shower.  I was totally confident in her as she threw me a wonderful wedding shower!!  However NOW she hasn't done a thing!  Only invites and I had to breath down her neck to get them out.  And people didn't get them in time so now some can't even make it!!!  And she hasn't got ANY decorations. Then tells me 3 weeks ago well I can't spend a lot of money cause we are having Haley's (her daughter) birthday the same week so cheap is best so I was thinking pizza!  WTF!  I said I wanted a laid back shower not that she had to spend a lot of money but it's a 2 hr shower and a nautical theme and I said what I wanted.  So I told her me and my hubby will just do the food. She never talks to me about the shower she is jeopardizing the whole feeling I'm supposed to have she had an awesome 2 showers for her kids but I only merit pizza on the sister scale. and now I get to do it all myself along with the hubby so I know it will be great but I know she is going to make it a big deal that me and my hubby took it over.  She never talked to me about decorations and Party City had NO nautical decorations.  So hubby and I bought from AmaZon and just bought it.  I told her that we were now yet doing this along with food.  Then she said well I wish I could do something.  Rather than let my emotions and anger go I told her well we got a good deal and nowhere in town had decorations we could find (my shower is in a week). So we couldn't wait cause of shipping.  She said well do you wanna do the cake I had something in mind but if u had an idea you can do it.  I said I liked her cupcakes that she was planning on doing she said ok. But, can I really trust her and how do I ask her if she's still doing games and cupcakes?  My trust is shattered.  I can't hate my own sister but it will be a long while before I ever let her in my life again!  She is one of those friends that I wouldnt give the time of day till they just vanished away too bad we are bound by blood. Ughhhh. Crying now. And I can't talk to my mom cause she just blames my emotions!!!  Nobody has the guts to stand up to my sister cause she is so kiniving and a bitch really.  She has always caused so many problems and drama with my family and I.  She almost rouined my wedding with her selfishness even.  Ugh rant over.