Can somebody answer this!!!???

My Uncle dates this lady.And her daughter is really pretty and i like her.She is really pretty and popular.And i am a shy insecure guy .We are the same age we are both 15.But she likes guys like Chris Brown and Trey Songz..I didn't because i am so shy.like a hour later i was walking past her and she started a random conversation with me and it was a bit stupid.When i started talking back i seem the girl smiling at me and i got so happy.Later that day,My Brother was telling me when he was talking to the girl she kept asking about me and asking why i wasn't talking to her.

Another time we were at a wedding reception and the girl was standing in the room in front of me and i was sitting down in the room behind her.Out of nowhere she turned around and started looking in my direction,There wasn't even anybody for her in my direction and there wasn't a clock.Later into the reception everybody went dancing instead of me and my mom and the girl.I was looking down at my phone and when i looked over i seen the girl turned her head really fast.I was confused because the girl and her mom was sitting way behind me in the wedding reception and i don't know why she was even looking back in my direction,There wasn't a clock back there,My Mom told me the girl thought i was cute but i never seen the girl talk to my mom.But now my mom is saying she always thought the girl liked my brother.If she never liked me why did she do that???