Hello had sex with this girl that was really into me on our first date. Fucked multiple times and she initiated. Now she texts me saying she regrets and she feels miserable. Says she didn’t expect to move that fast. We were both pretty tipsy/drunk. She was talking about relationships and how she isn’t sure when people are considered dating. So, after I got her an cab I didn’t text her at all the next day as I was busy. I think she got upset that I didn’t communicate after?? What’s the appropriate response to this ?