Well...the vet called. Sunny has an under-developed vulva and it is tucked inside. The vet said to spay her now would prevent it from developing and she will probably always have vaginal/urinary problems and would probably need a corrective surgery later in life. She said if we wait until she goes through heat, chances are good (about 80%) that the vulva will grow and come out like it should and then we can spay her. If the problem still doesn't correct after her first heat, then we will go ahead with the spay and she still may need corrective surgery. The vet said if it were her dog, she would wait. Sigh....... I guess we will wait. The vet said the chance of mammary gland cancer increases from almost 0% to 8% with waiting but she would still recommend waiting.