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. Why would she lead me on like that if she never liked me -_-?????