I don't know if this will comfort you or not. I personally believe we can see our pets again in Heaven. There is a man named Dean Braxton who was dead for 1 3/4 hours - no heart beat and no respiration all that time. You can see his story in a CBN vid where his emergency care doctors says it is "a miracle...a miracle" that he is alive and healthy in every way.
I believe his story because it is heavily medically documented as being true. Not in the mentioned vid, but elsewhere, Braxton says that while he was dead and in Heaven he was very surprised to see animals, including former pets, in Heaven!
I pray you will be comforted and that at least one more cat will be so blessed as to find a new and loving home.