I was having dinner with a group of friends when this girl I barely know (met 5 times?) tapped my thigh with the back of her hand while teasing me (I was wearing shorts so our skins touched). Throughout dinner, she touched my shoulder twice to get my attention. The second shoulder touch seemed odd as she did this to point out something on TV but then not say anything else after I followed up on it.

At the end of dinner, she asked me to keep her tissue pack in my pocket even though I noticed her jumper and shorts has pockets too.

Prior to dinner, I noticed her smiling deeply at me (eyes smiling too) when I was talking to friends about something interesting I know. I took notice of the smile as I don't get that kind of smile from people very often.

She is really introverted although she opens up more with smaller groups of people. Doesn't seem be to the touchy-feely kind too.

We don't even text each other and get to meet only during project meetings. Am I overthinking this?