He glances over, and doesn't say a word because he says that, but he also knows that Jacobi's probably commiserating with Maxwell over 'Colonel Helicopter Dad' on that phone. The comment on being down both of them gets a dissatisfied grunt; that would have been... unfortunate. Doable? Certainly. But unfortunate.

"She is being useful. Maxwell on cold medicine still better than no Maxwell."

His departure from the car is significantly more smooth, as Kepler's (thankfully) always been a furnace of a man. If the cold bothers him at all, there's no indicator of it. Instead, he's locking the car and stepping purposefully towards the doors. There's a glance at Jacobi, but just to make sure he doesn't get run over while texting.