This is where it gets tricky.

You asked her out and she said maybe another time. That’s when your response should have been “great text me when you want to get together”. That puts the ball in her court. She never hears from you again unless she reaches out to you to get together. You’re not interested in being friends or small talk. You’re only interested if she wants to get together. When you ask her out and she declines you never ask her again. It has to be her idea.