is this girl actually shy or just uninterested?

[Hawkeye]

Hung out with this girl I know awhile back. It wasn't really a date, just hanging out. She didn't talk a whole lot but she joked around a bit. When I dropped her off she mentioned that she was really shy and apologized for it. I gave her my number and left.

She added me on Facebook and was liking my statuses after this (I know it doesn't mean much but she hasn't used her facebook in years and social media is often used to casually convey affection, right?) However she never texted me. I stopped talking to her because I took that as a sign.

Later a friend said girls don't like it when you GIVE them your number? They prefer to be asked for theirs? Lol. I just thought it was more polite to offer my own.
So there's my pathetic cliché "Does she like me?" Question.
Was she just humoring me by being nice or something?