Story I found?

This is an idea I came up for a story a long I must have been...9 or 10.Oh and when I explain it it sounds a little corny to me. Anyway It's about a girl who is in a car crash with her parents, and when she wakes up thet're both dead. She grows up and becomes a very sucsesful buisness woman but is lonely and she can't become attached to anyone because she's afraid she will lose them. Then some kid shows up at her door who she has to take care of and everything, because he has no parents. She takes him in and trys to find his parents but he has amnesia and can't remember anything.In one part she invite her friends, more aquintences, over to her apartment and introduces this kid (toby) and they just stare at her because well, they don't see him. So she's the only one who can see him. After a while she grows to love him like a son, and he loves her. But toby and her one day go for a ride and...need I say more? But then when she see's toby is dead and she's dying, she wakes up in a