I do not think Aurora dies here. Not with Charlotte even somewhat nearby; she will be intervening if Reshtoka or Aurora make any noise in any confrontation from this point.
That said--I'm unsure as to whether Reshtoka would simply strike without warning. It would make sense; she's a wolftkin, she's hunting Aurora ("personal matters" was a nice obfuscating of that bit from the other wolfkin talking with Karina), and there's no in-story reason for her to try and have a dialogue with Aurora at this point in time. Could be that she strikes, some fluke chance has her miss Aurora fatally, and then the noise from any ensuing fight/flight will alert Charlotte (and hopefully also rouse Eve) and that will prevent Aurora's death.
I do think this clinches Aurora's character--we have enough from her side to see her overall character motivation in full from the start of the story (including flashbacks) to the present: she loves her sister, but knew that he Court would destroy Karina (and she's not wrong), and she took it upon herself to protect Karina in her own way. (Possibly due to always having been protected before by her onee-san; so this is her "paying that back", perhaps.)
Of course...it's not that simple, and she wasn't aware of Karina's own mindset, and how much she begrudged and resented the (as she saw it) special treatment Aurora had received. So when she had even the Prince taken from her--even if that might have been the best-case for Karina, given Orlando's abuse of her--Karina saw it as yet another attack, yet another thing taken from her by the one who'd done it all their lives before.
Knowing this now, could be too late--though I doubt this will see actual tragedy, and no reconciliation between the sisters. But with Reshtoka about to make contact, that should bring both primary groups together, albeit in a hostile & violent context for the foreseeable future. But with Aurora out here with minimal backup, in Reshtoka's back yard, I do think Karina will see this as Aurora once again attempting to take something from her.
But Karina's spiraling is another big point. She's hearing whispers about her again--mirroring and calling back to the whispers of her at the Palace & Court. So that's another point of trauma resurfacing, which I suspect is partly why she trudged off into the woods--she's trapped, once again, in another "Court-like" setting wherein rumors and prejudices abound around her. As she sees herself falling further and further from what she assumes Reshtoka first saw in her, I think her own self-worth is going to continue nose-diving--and she has no one around to catch her in free-fall, either.
Maybe Aurora will step in and help, if all goes perfectly. More likely, she'll make it worse, and things will also strain with Reshtoka as well, in the near-future.
But I do think this is seeing the tension for the three primary characters ratchet up. Karina & Aurora are on a collision course, Reshtoka & Aurora are imminently violent, and Karina & Reshtoka are starting to crumble even as at least one is taking steps to fix things (as she understands them).
Next chapter should be very interesting. Thanks again for the TL work; can't wait for next month.