Questions: Guy's Behavior

What do you girls think of when you think of a charming guy? A Sweet guy? Is it how he carries himself? Is it how he talks? Is it what he says?

Also: What kind of guy do you prefer.

There's a girl I like. She started flirting with me a few weeks ago. I started talking to her, brief exchanges in the hallways around the university - which she seemed delighted by - I asked her out, she said maybe, I asked her again days later, she said we should plan to get together after break - I asked her after break, and she said "Yes, but I'm just really crazy right now". I was going to ask her again in a few days, "when can we get together? " - but, one thing keeps popping up in my mind - on two separate occasions, she has made "Stalking" jokes.

Once when I ran into her as I walked around a corner, she laughed and said something about me stalking her - the second time was the last time we spoke, I asked if I had indeed seen her working at a restaurant I past by during the weekend - and she said "now you can stalk me"

What does she mean by this? She smiles and laughs when she says it and gives me a lot of direct eye contact - I'm just not sure what she means underneath it all by bringing "stalking" up. I have made absolutely "Zero" attempt to find/follow her - and often I find her following me, or staring at me from across a distance.

What does she mean to imply by making these stalking jokes?

Is she using it as a metaphor? She is, what I suppose one would call, a bright woman - she is in the college honor system after all. So could this just be a brainy way of teasing me, and in her way letting me know she likes my attention?

Points awarded for all answers - please don't just write "cheese burger" as a response =)