Gah!

So Kimmy is home, got home on Thursday I guess, though she hasn't returned any of my texts or answered when I called.
So long story short, I needed a job, Kimmy told me to apply where I work now, I was leery since my shifts would overlap with Joeys anywhere from 2 to 4 hours, she assured me if I took it she would watch Marlow when the overlaps occured.
First she pulls a powder for almost three weeks and I scramble frantically for sitters, then she refuses to get back to me, then she texts Joey and tells him she can't watch Marlow at all this whole week.  What!!!  I took this job, when I could of gotten something better, to help out a pal of hers, because I was assured she would babysit.  Now she's acting like a god damn child who can't get her head out of her own ass.  Sorry for the vulgarity, but I'm peeved.
And to make matters worse, I only have two shifts this week, and I am looking to trade one of them with a worker for a shift of hers next week(since my grandma who I haven't seen in a year and a half will be passing through that day) and that means I will work five days next week....I can't find a babysitter for that many days.  Ya know, if she decides to piss off again.
I finally got the OK to get my license from my doctor(heart condition for those of you who don't know) but I don't want to learn to drive in the crap on our roads right now, so until summer, I am at the mercy of the city busses and other peoples kindness.  I can't afford to pay a baby sitter, and I have no way to get Marlow there currently.  So I'm super hooped. 
Even my boss, who is Kimmy's pal, is mad at Kimmy since she knows how stressed I am from begging random people to watch my kid!