There actually is an explanation for the necklace being on the floor. If you click on the necklace in the inventory I believe it says she must have dropped it the night before while looking at the painting. The necklace means a lot to Cassima and its sort of a good luck charm for her.
The spraybottle is also in a logical place, notice it is right under the plants, someone left it there after watering them.
The game is a based on a Sierra IP so its only normal that there are homages to that classic game style. The originals are full of these. A dagger under a rock in KQ1, a golden ball under a bridge in KQ4. Most of the object locations are logical in the game but every now and then we like to throw those random things in there complete with classic shine to catch you eye. Also the necklace was originally somewhere else but we had to move it to fit the episodic format.
We're gonna tone down the Narrator's sarcasm a little. When you know the puzzles its not so bad but if you're exploring and clicking everywhere we can see how that can get a little tiresome.
We're aware of the bug with the scroll we'll try to fix that for the next episode.
Glad you enjoyed it!