Just checked the SPCA Florida Adoption page for Adopt A Cat, and it looks as though all three girls - Inara, River and Zoe - have been adopted.
'Tis a pity that Jayne and Simon haven't gone yet. I know Simon's very shy and Jayne, being a solid black kitteh, will be one of the last ones adopted out: Sad but true - orange-colored and calico kittehs go first, then tuxedos, then tabbys, then solid blacks/whites. Black cats in particular have that superstition onus that is totally unfair... but Zoe's been taken and she was solid black kitteh, so this is also a bias towards male kittehs, sigh.
As for Mal, he is currently tearing up the house with his Mach-3 speed and ongoing battle against a fishie dangly toy. More on that later.