I WAS using aspen, switched her to paper towels yesterday.
I am getting heat tape in today, going to monitor the temperature and humidity with the thermostat too.
I got her coming up about a month ago, she also could have caught it from their other snakes (blood python, red tail boa, or burm) that they allowed together under supervision. (I wouldn't of have, just so you know) If they had RI.. I wasn't able to see her enclosure when I got her.