Here in Portugal its a lot diferent.. Ppl start going out real soon. I started drinking beer at 11, heavy drinks at 13, going out since 13 too. Clubing itself from 15/16 on. Of course i wouldnt go to certain sofisticated clubs, but i'd go to some.
You asked her if she wanted to grab coffee. Then you asked if the time worked. Then you asked if the place was okay. Then you asked if she'd prefer tea.
Four questions. Four chances for her to say no. Four signals that you're terrified of making a decision.
Plan it. Pick the place. Pick the time. Tell her where to meet you. She'll either show up or she won't.
Either way, you look like a man instead of a scared little boy.