I'm completely unsure what signs shy girls show if they are interested in a guy. There is this girl I like who I know is shy (overheard her tell a friend) who I feel is showing signs of interest but I'm completely clueless about it. I used to be a shy guy (starting to open up), I never spoke to the girls I liked, only if they asked questions and spoke to me I responded (I only spoke comfortably to girls who were just friends) and only looked at them from a far distance and looked away if they saw me. This girl seems to be doing the same things as I did when shy, plus a few more signs. But I'm confused to as if they are signs or just what she does.
She always drops this guy home who I think she likes and always talks to him. She never comes up to me and talks to me, I usually ask questions to her and she then responds but never continues the conversation. I notice her glance at me from the corner of her eye here and there. Sometimes when I notice her looking from the corner of her eye at me, she keeps looking at me. Her torso faces me a lot, I've also noticed her feet point towards me (but don't always notice). I also noticed that her hands/arms are stretched towards me, and even she was leaning towards in my direction (when she was sitting in a distance). This all happened in one day. She has done other things which have been one off or only a few of these signs which have happened numerous times. One off signs include when I looked at her with a smile on my face, she looked down and smiled on rare occasions, she touches my hand when passing things to each other.
A main thing is that for about 4-5 weeks, she acted all causal, starting conversations and asking me questions. But she suddenly stopped, which made me thought she isn't interested, though only then did she start showing these signs.
So, do shy girls act the same way as shy guys act if they are interested in someone?
What are some other hints, signs and signals shy girls show, or is this girl showing all signs and hence is interested in me?