Yes they are double teaming you but Matsu is also doing a sneak attack to Saia. And if you have a question I am on AIM you could have asked there. Lazy
She isn't going through Saia,, she next to Saia going towards you. Her arm is going behind Saia's ankle/leg and coming up to trip her. The blade is going straight at your leg while Saia's attacks are coming at you.
Really just edit the part where Matsu slides between them that is all you can still slash to parry the blade away easy enough. You just got the angle.
Yeal, I'm really enjoying the Saberstaff, I'm considering using a long-handled sword but this made me consider adjusting that to be a saberstaff *when times suite it*