Why did she stop responding after she wanted to sleep with me?

I know I asked this question already but forgot to add the details so this girl liked me for like a year and a half and I know this because she gave me all the signs she did like me and she went to my house for work purposes she was in the living room and I said I was going to go get something in my room and then she went to my room and asked if I was going to give her a tour I knew what this meant but didn't do anything about it and then after I also jokingly said I wouldn't be with her after she left she stopped showing signs that she likes me including leaving me on read not calling me anymore and not even replying to my messages I wanted to know if she would of admitted to liking me so I texted her if she used to like me and she didn't respond I just wanted to know what this meant.

Why did she stop responding after she wanted to sleep with me?
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