People keeping their promises

To people they might look like a spoiled brat but IM not.like I'm so frickin disappointed . 2 days ago i told my mom about my attire for Friday because I'm perfoming .so today i was asking her about it she said it was late there wasn't anything that she can do so she suggested i wear something else.she's always like this she never keeps her promises what hurts me the most is that i was waiting for this moment cause I know it's never gonna happen again but she ruined it .