I know this is a silly question but pls bear with me. A few days ago I went out with a girl and some of her friends and really had a great time with her but i fucked up and didn't escalate the situation.

Now Im not really experienced with using FB(i know right wtf) and facebook etiquette but I want to send a message to set up a meeting with her again but I dont know how.

I haven't seen her online the last two days so I haven't messaged her so I dont know what to do.Is it normal to message people when they are offline? And if anyone could help me with some questions about FB it would REALLY REALLY help me out.