the school was probably kept at an inadequate temperature most of the time, since schools are always inefficient with providing proper care to their animals... she could have some permanent damage to her lungs and a 2nd vet appointment may be necessary-let the vet know that the medication isn't working...
if you have a larger cage, then try providing a 2nd heat lamp-one for the bottom floor and one for the top floor... or maybe try separating the female from the other degus just in case she might have something contagious... you might also try keeping her in an aquarium, since they are usually easier to keep warmer than open wire cages... a vented lid with a heating pad and heat emitter in it would keep her pretty toasty
do you have a heating pad for them? that'll help keep the bedding warm
you could also try buying a room heater to heat your room, keep it plugged in, in your room and try stuffing a towel or piece of cloth under the door so the heat doesn't escape from your room and the coldness can't come in... keep your window closed tight on colder days and open it on warmer days and keep your heater off on those days...
and also, how much attention do you provide to your degus? depressed animals who are lacking attention are more suspectable to getting sick than happy degus who receive regular attention... how is her eating and drinking intake and energy level? does she seem lethargic or is lacking appetite?
if you have a larger cage, then try providing a 2nd heat lamp-one for the bottom floor and one for the top floor... or maybe try separating the female from the other degus just in case she might have something contagious... you might also try keeping her in an aquarium, since they are usually easier to keep warmer than open wire cages... a vented lid with a heating pad and heat emitter in it would keep her pretty toasty
do you have a heating pad for them? that'll help keep the bedding warm
you could also try buying a room heater to heat your room, keep it plugged in, in your room and try stuffing a towel or piece of cloth under the door so the heat doesn't escape from your room and the coldness can't come in... keep your window closed tight on colder days and open it on warmer days and keep your heater off on those days...
and also, how much attention do you provide to your degus? depressed animals who are lacking attention are more suspectable to getting sick than happy degus who receive regular attention... how is her eating and drinking intake and energy level? does she seem lethargic or is lacking appetite?