Sen is an adept genjutsu user, able to trap her enemies, like Team Guy, multiple times without them even noticing. One of her techniques uses the pollen from a cactus to trap multiple foes at a time, forcing them to cross the same spot several times in their mind. Since Sen prepared this trap ahead, it stands to reason that she's also very intelligent.
Sen is skilled with using her fans in close combat as shown when she used them to fight and block her opponent's attacks. She also uses them in conjunction with her genjutsu.