Ah, yes; this is why South hadn't done a cat before. People liked cats, and weren't afraid of them, to the point where she's getting scooped up before she can really process what's going on. Even being a cat with greater sense of smell and hearing she wasn't great at taking stock of her surroundings.

A little growl rumbles in her throat as she turns to look at the offender, ears going back in preparation of a hiss, but then she sees who it is and there's a dim recollection of seeing her before ... she grows silent for a moment, then settles into Sombra's hands and starts purring.

Yeah, they'd fucked around but she'd helped her deal with the whole Silent Horizon bullshit so she's giving her a pass on this.