At night you have to go hide by the bushes near the entrance to the auctions. You will see her leave then follow behind her, hiding behind object when you go around the island she enters the shop where you buy the sail. Run in after her and she can't escape. Talk to her and then she will change her ways AND give you a bottle. (i am not sure about the bottle part but i think it i true).
Yes you do get a bottle from her. but be careful about how you answer her questions because otherwise she will leave.
At night on windfall, a blond girl will be in the space between the house of wealth and the chuchu jelly shop. Go to the left, and watch her run. Hide by the steps to the cafe. Put your camera so you can see the small safe to your (should be) right, in the stall. Wait for the girl to come, with a bubble with a rupee in it above her head. Go to her. Answer her questions considerably, and say "not at all" when she says "Do you understand my plight"? You get a good item, not saying what.
The thief is your mom. She is secretly playing Poptropica so you could stop playing the piece of sheet that it is.
the thief is in the jazz cafe next to the stage.
the thief went on a boat
The thief is the French reporter.
you have to catch a thief on counterfeit island and when you catch the thief you will get a medallion
On the train. For one of them.
you go to grannys house
In Counterfeit island, you chase him.
Mr Silva
Because you have to give the tickets to the guy in there. Then, he gives you his spare ticket, which is your acess to the underground tour thing, which leads you to the creepy guy that tells you to get the job at the muesum to stop the thief, which leads you to get the job, which leads you to be framed by the thief, and then you find out that the real thief is the detective (the woman with black hair and red earrings) and that she is the Black Widow and then you stop her and save the day.
The lady from France. lol.
the key card the thief you chase on scooters