okay bro, here's what you can do now:
tell her you would like to go out with her still, and, ask her when
she's free. don't give a specific time. this way, if she's really
stuck at home for a reason, example: parents? she'll tell you or,
she might tell you, she's doesn't want to go out with you (if
that's the case, i'm sorry.)
OR ALTERNATIVELY,
write her a note, and tell her that you like her. (: