Check and see if she does that to other guys, if she does don't take it personally. That's common for loud outgoing (not-shy) girls to do. Its rare for shy girls to do that to a guy unless your really close friends, then she just feels comfortable around you

Ohhh the female mind....

I think it still to early to think that she likes you but you can take this chance to make her closer to you

I need more information. But if she leans against you, maybe.