The Scarred Sister

 is a potential Surgeon crew member.

Background
Phoebe is the youngest of the sisters who used to live in the grand house on Hunter's Keep.

Character description
"She's usually in the sick-bay, or up on deck, listening to the wind, watching for the rare storms of the Unterzee."

Other Interactions
Apart from giving the stat bonus and increasing your stats with secrets, you can also transport this officer to the required final destination. Doing so will exchange the officer for other items.

 final destination is either Abbey Rock,  Naples or  Station III. Deliver her to Naples, which is the best choice, to also get  A Dream of Red.