Several years ago I met a girl at my local tennis club during weekly lessons, and we became friends. She was a very shy young thing and I was the only one there she ever used to talk to, and whenever we were to choose partners to play tennis with, she always asked me if I wanted to play with her, and I always accepted. We became so close that we were mistaken for a couple once, and even now when I think of her I feel something in my heart pulling at me, as if there was a bond that we had made together. As time went on I found how beautiful and sweet she was. She was 4 years younger than me, so at the time when I was 15 she was 11, but as you get older age gaps seem less of a difference even though they're not, so I began to fall in love with her, although I didn't know if she would return my feelings. I didn't want to upset her or anything so I didn't try to confess of my love to her.
And then all of a sudden she disappeared. One week when our lesson finished I said goodbye to her and she replied "Bye, see you next week", or at least around those lines, and then the next week I went and she wasn't there. I thought at the time she was on holiday or something so thought nothing of it, but as time went on I kept going to tennis practice and she didn't turn up again. I haven't been able to contact her since, but absence makes the heart grow fonder, and I have not forgotten her. I believe I have found the girl for me in this beautiful young lady, and have decided to do something about it and try to make contact with her again.
I know her first and last names and also know the village in where she lives but don't know where her home exactly is. After two or three years of worrying about whether she is safe I have decided to send her a letter with her name and village on it and will rely on the Royal Mail to get it to her, as I haven't been able to find her on Facebook or anywhere like that. She will only be 14 now so she won't be in electoral records either. I want to be subtle because I know she is a shy young thing and don't want to be seen as a stalker, because I am not. Do you have any advice on what I should say in my first letter to her, or any advice on what I should do instead?