It was really late when I messaged a chick I've been eyein on FB, about 11.30pm. It went alright, and she said

Haha cool, what are you doing tn?

I said I want to do something but no one is up for it, what about you?
I also asked her if she heard this new song I was listening too.

Probably should've kept it shorter on that response but I guess I was anxious since I've never done a FB opener.

Anyway, it went cold so and it was into the morning of the next day. I wonder what rule here applies.

Should I wait till tonight or tomorrow to message again, and should I tease her about her inhability to stay up and chat or something?