I just killed one inside myself from lack of water. Luckily it's twin survived so I didn't lose that Cherry Noir pheno.
You might save that one if you keep it in lower light conditions and spray it with water a couple times a day to help keep it hydrated while whatever surviving roots can regrow enough to supply the plant again. All the leaves on my vegging and now dead plant were crispy dry and too far gone to recuperate.
Good luck!