She's that same girl you saw on isle 10 with her trainer, Ash.

Big broad birthing hips, and m.otherly antennae. She'll give you that look with her feminine eyes. I'm sure you know what that look is. Bedroom eyes of course. Being the sexy dragooness that she is, damn she's feminine.

Dragon Pulse is her feminine beauty extracted into a beam. That is why it's the most feminine move on the most feminine pokemon.