two ways of fixin that, put her near a female that is in heat and it will force her to show signs, or put her between two males but dont let them get close and monitor them. they will let you know
nope it wont FORCE her to show signs, but sometimes will bring them in. You may have to check her regularly with a paper towel, she may not swell at all, and be very hard to catch. I would put here between the two that are in heat, and check her daily, may take a couple weeks.