You can see Darling in the cabin if you rest in every chapter (There's a cutscene involving Brother, Barkeep and Darling).

Heal Ayde, Hurt Darling

Ayde Ronso 150
Baralai 210
Buddy 180
Darling 30
Gippal 210
Kimahri 180
Lenne 210
Lian Ronso 150
Lulu 210
Nhadala 60
Nooj 210
Paine 210
Rikku 210
Shuyin 180
Star Player 120
Vidina 210
Yuna 150