You know ... what the hell.

Okay so there is this girl I know and I like her as a friend. She's fun and funny to hang out with. I haven't seen her for awhile, so I invited her over last night to watch some tv and hang out.
As soon as she got there, she poured some absinthe, set some sugar cubes on fire and proceeded to tell me about all the guys she had slept with on her last vacation. This was fine, I have no problem with the fun people have. But the thing is the more she kept talking about it, the more it was clear she was trying for a reaction.
We moved to the couch and she sat very close and talked more about sex. Okay a couple of things here. This is my house. My partner was upstairs watching TV and there are pictures of our children on the wall. I'm not strictly monogamous but I do have common sense. So I let her do what she wanted, but made no move myself. Eventually we watched TV and drank and talked some more.
When the show was over I asked her if she wanted to sleep on the couch. As I didn't want her driving if she was drunk. She said, and I quote: "I want to do whatever it is you want me to do." There was purring involved. By the way she's 30 years old, so old enough to know better I would think. Also, not particularly a looker in the conventional sense. That doesn't seem to stop anyone. Including quite a few guys that I personally know.
The expectation was, even though I should know better, that because I am a guy I should sleep with her. Just because she was that available for me. Long story short, I didn't and not just because I didn't want her to know my secret.
I was perfectly happy to spend time with her. I told her, honestly, I was glad to have her over. Still when she left she seemed really disappointed. I never said that I would sleep with her. I never implied that I would, unless just asking her over was the implication. It was just to awkward, just no ... I don't think she's going to want to come back and that's a shame.
Was I in the wrong here? Can't people just hang out and be friends without screwing?