Kyoukai is kinda like the left hand of the Hi Shin Unit/Army. Her being bedridden until now definitely affects the Hi Shin Unit/Army offensive capabilities.
5000 soldiers under her (which is 1/3 of the Hi Shin unit/Army) but without her commanding them also effectively reduce the Hi Shin Unit/Army strength by 1/3.
Not to mention losing access to her destructive power hurts a lot.
Just my 2 cents of opinion
