Questions: Flirting

I've been training in Vibram Five-Fingered toe shoes for the past 5 months and I've noticed the biggest difference besides my running form and foot flexibility is that my calves have improved tremendously. Definition is exactly where I want it to be and even parts of my lower leg above the ankles that I didn't know could be muscular have been developed.

Do ladies appreciate well defined legs or is it one of those things where as long as they aren't skinny and white it's whatever?

This is a silly question for the sake of curiosity.

There is a girl in the neighboring department that I like. We have never talked to each other. I used to stare at her because she is beautiful. Couple of times, there was an eye contact during our stare.

She ignores me when she walks past me. Does this mean that she does not like me ? Should I start ignoring her too ?

Girls, please advice me what kind of girls should I befriend ? What body language should I look out for in a girl with which I can safely assume that she is into me.