Is this petty?"

My mom and brother have left me locked outside at least 7 times this year. I live in a crime ridden neighborhood on the south side of Chicago

This time I was locked out for 2 hours. I got "home" around 8-8:30, she told me prior to leaving that'd she'd be here to let me in. Well guess who was still out with her friends.

But I'm petty for being mad about it. But when her or my brother need to be let in I make sure I'm here. On time she said she'd be in at 11:30 and didn't come home until 1 am. I had to work the next day but guess who stayed awake.

I guess this is a rant. I'm pissed that she would call me petty. I'm sick and wanted to come home and sleep.