The Wrong Situation

Yesterday, I went to the beach with my family. Mom, sis, nephew. I saw a girl there. She was beautiful. White bottom, red top bathing suit. However, she was there with whom I believe was her family. Parents and siblings. The two young ones I over heard was her own. So instead of being rude and interrupting a family gathering, I decided to drop her a piece of paper with my name and number. So far, no calls. I'm thinking wrong approach.