I know its immature to ask this haha, but a girl who i find quite attractive teases me a lot.
Over the top teasing, like constantly when im with her. She goes out of her way to tease me and says stuff like "I would even hook up with HIM if i were drunk"
She even hits me often, and constantly bags my height and calls me scrawny.
At first when i met her i was like "WOAHh...bitchh"
But now im thinking...do you think that maybe shes doing this because shes into me?
Reasons why im starting to think she might be into me:
1. I jokingly told her that I had cocaine on me and said "lets go do some" and she didnt believe me, but came for a walk with me anyway and didnt pull away when i put my arm around her. (I know its a strange joke, but at the time it made sense with what the bunch of people we were with were taling about)
2. Once when i was leaving a party i kissed all the girls on the cheek but purposely ignored her. She complained to her friend saying "I think he was mad at me or something

"
3. She often asks about me.
However i also know that she stalks some guy who she finds really goodlooking, so then ill feel like "Oh, she already likes someone else". Is this the wrong way of looking at it?
Also, how should I respond when she teases me? Currently I either make a really good call back (30% of the time) or if i cant come up with something ill just shake my head and ignore her. Is that the right thing to do?