There is a girl..

A girl who is a family friend has started to behave differently with me from the past few months. So this girl doesn't live anywhere close to me,we just see each other during weddings or any events. I've noticed that she looks at me and smiles often ( I even have some screenshots of dance vids to prove I'm not overthinking). Also while dancing she repeatedly changed her position to come besides me. I feel that even I've developed a huge crush on her due to these repeated instances.

I am scared to approach her as we have a great family bond. Her father is very polite to me and admires me. At the same time I am even afraid that I might lose her to someone else. Am j just overthinking or should I let it go?