Cliff is convinced that Jack doesn't have very good vision. He's actually had this theory for awhile, but I haven't really seen signs of it up to now. Per the theory, he can't tell if Sasha is in a room which accounts for his defensive posture when he enters and explains his hiding in "safe" rooms/areas. It also accounts for him hissing at everything that moves. The sisters just watch her closely whenever she's in the same area.
Cliff and Jack have a serious bromance going on, so Cliff is feeling very sorry for Jack. Jack was all tensed up, so Cliff was. I could tell last night that he was thinking that Sasha would have to go. But I used his logic when he was defending Jack (no scratches marks) when the shoe was on the other foot and Jack was terrorizing Penelope.
So yeah, there's lots of cat drama in the house. But Sasha is a sweet kitty. She's affectionate and will hang out on the couch next to humans. She seems to like to held and likes to lay on human chests while they're at the computer or watching TV. Cliff has always wanted a lap cat, but has been denied with Jack, Lulu and Penelope. Sasha has charmed Cliff, too.