Getting magically eaten by a dragon wasn't part of the plan. Really, there hadn't been much of a plan to begin with, but it had definitely involved more dragon slaying and less getting knocked unconscious. Even the unconsciousness wouldn't be so bad if it didn't push Ashe closer to death each time.
Katsu is worried sick at Ashe's descent. He's worried enough to find a dragon whisperer to help, despite the fact that he hates her. He hates her appearance, he hates her attitude, and he especially hates the way she's helping his lover when he couldn't. Despite this, he hopes she succeeds -- or soon Ashe won't be alive at all.