Just so frustrated

I feel like I constantly put everyone else first. I sent my mom money for gas so she could go to my sisters wedding and she's suppose to come to my house on friday. I said why don't you come a day early and hangout. She said I can't I have no money for gas. I'm like are you kidding me! I just sent her a good amount of money for gas to come to my house and to go to my sisters wedding. I'm sorry rant over. I'm just so pissed off