Then you did nothing.
Well, she is married and her husband (in which I know) is a really nice man.
I don't want to mess around with a married woman that I know her husband....
as I said:
Your choice, could be for many reasons and is valid
I was in no way saying you did something wrong (from your point of view).
Actually I agree with what you say above, totally
in regards to this:
I guess she might be attracted to me but afraid of it....
Put this together with what I said.
She let it all hang out, she
IS attracted to you on some level.
You did not respond, that puts her in a vulnerable place, for a woman. She might have reason to be afraid, especially if she likes you more than you like her. Which appears to be the case, looking at both of your actions.
She might also have thought about what she did and felt guilty. Talked about it with her friends, any number of options. For whatever reason, she was colder the second time. It does not mean she will stay that way.
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You have shown you have more control of yourself than her. That can both be a turn on and something which unsettles women.