I agree with Charles if she doesn't show up and doesn't txt you cut off contact completely at the very least if she was playing games she won't have the satisfaction of knowing for sure that she played you. If she gives a lame excuse for not showing up either don't respond or use what I suggested and stand up for yourself. For future reference if a girl txts you ahead of time with a lame excuse of why she can't make it this is the routine I use and I adapt it for each situation. Girl txts me
Her: hey I'm tired from the gym I don't think I can stay awake until 8 (weak ass excuse)
Me: no worries friend of mine has a fight tonight in vegas my friends are twisting my arm pretty hard to come check it out.
Her: (instant reply) VEGAS!!!! GO but make sure you behave!!
Me: always

Her: well that's no fun.
Now she's testing me to try and get some satisfaction, but I cut it off.
She kept texting me through the night and texted me the next day as well. I've never had that routine not work for 100% for me.