I can't remember the name of the song, 13-year-old girl singer, "Sometimes I wonder"?

Question

I can't remember the name of the song. I think someone told me it was a 13-year-old girl who sang the song, it starts with "Sometimes I wonder..." (or some other connection between "sometimes" and "wonder").
I think it's an oldie.

Thanks.

Yes!! How could I forget?!

Thank you!

Answer 1

It could be out here on my own from the musical "fame"