Lost White Cat with Gray Markings - Ewa Beach

Missing white cat with gray tabby markings on face, tail, and a couple large spots on back. Microchipped, spayed, has all shots and vaccines, treated with Frontline. Friendly and curious. Last Thursday and Friday nights I heard loud cat cries that sounded like mating or a fighting. I think some strays must have gotten into it and scared her so she got lost. Any information is greatly appreciated!!