Honestly, bro, it does just sound like she's being friendly. It's just how a lot of girls socialize, they just tend to be very friendly to their friends and a lot of guys tend to pick up on it as a girl wanting a relationship. Guys, generally, aren't conditioned or encouraged to socialize quite like girls do. Guys tend to tease each other, say what they mean and not what they don't, be blunt and generally speaking, are taught that being physically friendly with your friends is a no-no. Obviously this is more like the expectations for a straight guy and not all straight guys are like this, but you get the idea. We're 'influenced' a certain way by our parents and our peers, though it doesn't always work.
You think she lead you on but she doesn't really think she has. A girl who really does have feelings for you would eventually be real with you about it. It's a very tricky game to play, but chances are if you like the girl already, you might be putting thoughts into your head and reading into things that aren't there. It's happened to me before.
It's not because you're trans, I don't think, this happens to cisgender guys all the time.