making disappointed again?

can't sleep the whole night.... don't know why.. cause of making disappointed to her??? I play basketball till 7.30pm she say when i done find her.... but i didn't... i 8pm only reply her but didn't chat with her i just say i tuition find u later... then after tuition i find her... i knew her was sad or in a bad mood cause of no reply her instantly... then she say sleep then bye... i feel sorry and the whole night didn't sleep... till now.......i hope she is alright....night....