Is there a way to regain the interest of a girl? I'm in

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Is there a way to regain the interest of a girl?
I'm in college and there is this girl who was interested in me but apparently I screwed up and I don't even know how. We went to the cinema as a second date and when the movie was over I asked her if she wanted to go eat something and she flat out said no. When I asked her if she wanted to do anything else she said no. She was still friendly and polite when she said it.
So we took the train back. At the end of the date she was still as friendly to me as ever and we laughed about stuff but it's still weird how it just ended like this soon. Not even sure if she wants to see me again. I texted her the next day and she texted me back right away

What do? Normally that's the part where I would act more distant and cold to her or talk to other girls in front of her to get her interest back, but we are on break right now so I don't know what to do
besides not texting her at all which will probably be the death of this thing we had