Ghanima is well-versed in hand-to-hand, and tends to mash the various Earth-disciplines together if she's sparring with someone. She also fights dirty.

If she's actually fighting, she'll be using the martial art known as the Weirding Way. A trained Sister has full control over each muscle in her body; it allows her to bend the last joint in her little toe while remaining otherwise motionless, bend and contort her body in ways that most would consider impossible, put a remarkable amount of force behind a physical blow, or move with extreme precision and speed. Ghanima is considered a Master of the Way, but she is still not as good as Leto. Then again, no one is.

The Way can be taught to non-Bene Gesserit, but Ghani is picky about who gets lessons.