"Don't let it slip right through your hands"

I was randomly humming along and these words came into my head

"Don't let it slip right through your hands"

Female teenage voice... not my kind of singing so definitely not my own lyric

Anyway i googled it and came up with something that looks kinda familiar

The film "what a girl wants" was mentioned.... and i think i've seen that so that might be where it comes from...

But does anybody know who sings it in that film?? Or actually what the film is about