A Lasso For A Swan (2009)

Original title: บ่วงหงส์

Follows the downfall of a high society girl named Pimlapas, whose life starts out rosy. She is a daughter of a wealthy man, she has a great boyfriend, and she is a well-known supermodel. But one day, she loses everything. Her boyfriend dumps her, her father dies, and her stepmother swindled all his wealth. In a blink of an eye, Pimlapas is penniless and an orphan. During her desperate situation, she is contacted by a mysterious person, they give her an offer she can't refuse. Pimlapas is assigned to penetrated a high-end hotel owned by Ramet to steal important documents in exchange for a truck load of money.