Delangue's (Art) Quest

If you followed the Casino Rei Long-Oak Quest walkthrough!
You should have all 10 Paintings
THE PAINTINGS AND LOCATIONS
Four are in the hands of two adventurers (Jane and Sifael). You 
get each one after you defeat the two in combat, and each time the 
battle is more difficult than before.
The first time find them at the very start of the game (in the deserted shoreline). Where the Divines lands after defeating or escaping the ghosts/Demon.
The second time they can be found in Fuar. head north then west, just before the Spa..
The third time you find them in a hole in the ground. Go to the 
desert north of Rei-Long Oak and look for the hole north of the town 
exit. Note: There are some minor bugs with the third encounter, but 
nothing game-breaking.
The fourth and final time you find them is in your Castle. As you
 walk in go to your left, in that small room, and you will see them. You
 don't have to fight them this time around.
FOR THE OTHER PAINTINGS................. These are in random 
order, but will give you the required 10 to move on in this quest line. '''
(5) Ceeves Ocean: is in the Church section of the 
Capital. Down from the church. Talk to a Noble Woman wearing very 
extravagant clothing you'll have to pay out 20,000 for the painting.
(6) Ceeves Ocean: The houses to the left of the Church, you want to walk into the house in the Middle!
(7) Ceeves Ocean: Queens Castle: Go into the basement, once there go inside the gated area and search around.
(8) Ceeves Ocean (Noble District) Talk to the Maid, leave 
the boat dock and head right (west). The Leonell's (Mansion) however you
 will need to complete a quest Leonell wants the Heir of the Silverreed 
for the Painting.
(9) Rei Long Oak: You'll find a bandit wondering around, she will approach the Divine about a painting he may be interested in.
(10) Everlight: GO to the Mayors home and search the first
 floor the painting is hanging on a wall in front of the entrance door, 
look at it then ask the Mayor about having it.
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At some point during your collecting of these you should return 
to the Queens Castle (Ceeves Ocean) after you walk thru the door you 
should walk around and you should get an automatic dialog as the Divine 
unknowingly hears a conversation about Delangue, this will give you some
 information about her (little) you will find out the identity of her.
At some point (unknown what or how) you should take a walk 
outside the Divines castle (Divine Island) Go south to the next scene, 
the go west (right) to the next scene, head northwest (next scene) head 
as far north as you can, look to the east (left) of that area, you 
should see 2 chests one Blue, and one Red. The Blue one is a mimic 
(Ancient Armor) the Red one has a few Shade ores.
Go back to the Divines castle once you enter the Castle your 
assistant will approach you and  inform you about Delangue 'leaving the castle, and will not be joining you for dinner' (?) but Siné and her 
sister Jane are in the guest room awaiting you.