My first time breeding I was succesful without cooling. The male usully stimilates the female into producung follicles. Its likely the male is not as interested as he could be. Do you have another male? If you do and you are able to get a little sperm out of him without hurting him, wipe that on the back of the female and then put in the male you want to breed. If you are unable to safely get sperm you could just put the other male in with her so his scent gets on her. Doing this you will have the risk of him breeding her. Some people combat 2 males to get the one in the mood but this is not always recommended. You could also put another male in her cage without her to get his scent in there, it might work. If you dont have another male I dont really know how else to get yours in the mood.