Firefly Glen seem to paint a red line

Hydra followed Isilme's trail with a mind to teach her more of the Glen; it was her own fathers favored territory, and her possessiveness of it was largely due to this. But for all of Moonspears years it had been an extension of their hunting grounds; she thought it would be wise to teach the young Wodakru girl of the best paths to take. All seemed good, at face value, but that simply was not so—especially in the snow; the returning beasts had favored routes, and their migratory pattern was one Hydra had long since memorized. 

It took no time for her to find the winterwhite girl thanks to scent alone. She was not alone, it seemed—but when a stranger advanced upon her with misplaced authority, Hydra wasted no time; this land was as good as theirs, and Isilme was both her subordinate and her ward. Hydra would be swift to correct the others misconduct, and her own approach could not be missed as she moved to meet Isilme with a low snarl. Stand down, her body language commanded of the white-and-black woman.

And if she did not, by the time Hydra came to meet them the matriarch was quite unsure if the other would live to regret it.