If Sherry decides to help Daryl and/or Dwight decides that Daryl deserves a better fate than what he got from Negan, Daryl could discover that he has allies within The Sanctuary.
The whole point of Season 7 is to break the heroes down to their lowest points, and Daryl is already pretty low.
Judging by the events of “The Cell,” whenever Daryl wasn’t actually being tortured, he may have help when he eventually fights back.
Sherry seems to be sympathetic to his plight, and Dwight cares more about Sherry than anything else.