In The Craft, prior to invoking Manon, where does the power that the other three girls seem to have come from?
It's nowhere near as strong as Sarah's power, who is a natural witch. She's the one who actually seems to be responsible for pretty much every spell before Manon steps in. Nancy is obviously a little stronger herself, killing her step-father. Bonnie and Rochelle do virtually nothing, but I suppose being able to even assist in invoking Manon means they must have SOME ability.
Where does it come from? Did they just study to learn their powers?