"I try," Ibani replies.

Ibani blocks his next set of attacks, then switches to wielding her lightsabers with the Force.

The advantage with wielding them this way is that she's not limited to the angles that her body could handle, she can even attack him from the front and from behind at the same time. Plus, of course, her body is free to deal with any openings Obi-Wan might leave in his defenses.