I'll be translating since everything is in spanish.
I had some good banter back and forth with this girl and it got to the point of:

Me: Hey girl, happy saturday (sent in the morning)
Girl: Thank you! How are you? (sent around midday)
Me: Sent her a picture of what I was cooking for lunch (I also add "You know how to cook also right?")
Girl: OMG that looks delicious. And of course!
Me: If I made dinner, what would you contribute?

This is where she didn't reply back. So I wait 3 days and send her "If you're too nervous, I'd understand"
She replies with: Why do you say that?

How should I respond to that without sounding too logical? Or, is that the approach I should be taking to begin with?