How can I get her to talk to me?

Sorry mate. I don’t believe we can answer that question if you don’t give us more to go on.

have you talked to her? or does she not know you exist?

Send her a cake.

Start slow, say hi to her when you pass by. She’ll get used to it and start saying hi back. Don’t push it. Start us a mini conversation, and let it grow from there.

This is assume you guys don’t know each other. If that’s wrong, I got nothing, sorry.

She is on, then she is off? What, you’ve been dating on and off? Is she a robot? More info please.

look like you are actually interested. turn off your cell phone, your gadgets, your sports. your porn. everything. take her to dinner and TALK. girls just want to feel like a guy cares and at least PRETENDS to understand them and care (i know cause i am a girl)