Flowers for Delainy

Flowers for Delainy is a side quest during Balduran's Final Voyage, one of the quest arches in the Tales of the Sword Coast expansion.
With this historian you should be polite and romantic to gain their help, because if you're impolite when accepting the previous cloak quest, you will NOT receive the Belladonna Flower quest after returning the cloakDELAINY1.DLG, actions 4, 5, 8, 13, 26, 30, 42: SetGlobal("NotHelp","GLOBAL",1); action 48: SetGlobal("WillHelpEscape","GLOBAL",0)
SetGlobal("NotHelp","GLOBAL",1).
Once you've returned the Holy Cloak the island's historian will ask for one more favor. You are to grab some Belladonna Flowers, which are found in several places and any one will do, including Dradeel's Cabin, so you most likely already have them in inventory.
Return them to complete the quest. The flowers were actually meant for you, and some romantic dialogue follows. This is another freebie, however completing the quest will make Delainy willing to help the party escape the island as long as you don't refuse their feelings towards you.
When you acknowledge their feelings, but are not too forward:
Too forward:
Refusing their feelings consequently revealing yourself as a manipulator: