Why does this girl behave like this?

[Chuan Yeow]

Ok so this girl had been staring at me like once with a very smiley and happy face looking at me and only focusing on me last Friday at school. Then yesterday we had to do an oral presentation for school and her turn was up so she was giving her speech and all and then she saw me in the front row and suddenly smiled super wide and read like a paragraph long of her speech while looking and facing me for about 10 secs while reading her speech facing me directly then she went back to presenting to the rest of the class, then after 2 classes later, she needed to borrow a charger for her laptop so she was asking around then when she saw me she stopped talking and just smiled and looked at me and we had like some awkward gaze for like 2 seconds then I interrupted it with like "hey so you need a charger?" Then she's like yes so I went to my locker and got it for her and while she was waiting I could hear her talking to our other classmates while I was looking for the charger, then when I got home I Facebook messaged her and asked her why she did all those things and she just replied that because she was proud of me because last year I was doing **** at school which was true btw then she said she smiled at me because she was proud of me or something, then I asked her what about when you were presenting your speech to the class? And she was like I was engaging the audience which was part of our criteria for passing that presentation Is engaging the audience. Then today, no signs..

[April]

Something is wrong lost interest

[Mimi]

Maybe she likes you but shes shy or afraid to admit it?

[djc]

Sometimes a smile is just a smile and a look is just a look. You cannot base a decision to pursue a relationship on a smile and a look. You would need a lot more from her before you commit emotions.

[Alexis]

Myabe lost interest.