Lisa was only breathing shallowly, trying to get Fleur off as much as she was trying to get her to orgasm. "Maybe you haven't hit the right spot yet."
And as the fates would have it, as soon as she finished that sentence, Fleur found the spot that usually made her want to scream. Crying out, it wasn't Fleur's name yet, but if Fleur kept that up, it would be soon.