Why so sad, I thought you'd be happy since you said you never bred her
I keep a few 1,5-2 ltr bottles filled with water in a freezer and change them at least twice a day I put them on top of their housing / cage usually over their toilets and also I put white foam box over them so they last longer that way. Remember, cold air goes down so place bottle on top.
Also if we need to go somewhere I make a double floor in the carrier and put 2 freezer blocks under it so even if it is hot outside their floor is cooling for a few hours.
Another trick, you can put some ceramic floor tiles they love laying on them. I use large tiles, also you can have two on rotation and keep one in your fridge.
