Where do her powers come from, is she a psionic in the same way as Moondragon, as in her psionic potential was just activated.

It's a little unclear. One could argue that it's chi, like Iron Fist, or mysticism, since she learned most of it from the Hand, which uses magic quite regularly. Or even just training. Her main abilities that have been shown over multiple issues are things like using mind tricks as an aid to stealth, or as a defense against psychic attacks.

She was just a normal human until being resurrected by the Hand. Her powers have been kind of inconsistent since.