Nikolai tries and doesn't entirely succeed in suppressing his worry when she says 'wipe us out'. That's the thing with the Wolves: their prominence puts them in danger.

"Regardless, we have committed our full strength, such as it is, to the defence of Wolf City. They did not make landfall close enough to the ocean for us to use the Undine Suits but the Turpans should allow us to insert our elementals behind the line of their advance, allowing us to take them in a pincer movement...Get well, Ranna. And do not do anything Remembrance worthy at least until I get back."