30 Seconds exposure? I don't think it's at all likely she'll get sick from that short exposure.
HOWEVER, when snakes (all kinds) are exposed to chilly air, they may instinctively jump to the conclusion that winter is here & it's time to refuse food, so as not to die from getting caught with undigestible food in their G.I. tract, which can actually kill them. That's why snakes evolved this way (refusing food in late fall thru winter)- those that failed to stop eating in cold weather did not survive to reproduce & become the snakes we have around today.
Snakes are SO easy to transport- first, secure them in a cloth "snake bag" or pillow case, then put that into an insulated lunch bag, a "coolers", & or a styro-foam shipping box. Any of these can all be used. Brief containment won't need air holes, longer containment will, depending on what you're using & how air-tight it is. In a pinch, I put a snake right in my shirt so my body heat keeps them cozy.