It is very common and normal to go to work in KTV and charge those so-called fees. If there is a contract system between the company and employees, there is no need to be afraid of being cheated.

These are not the key to the problem.

In fact, she charged you so much money to prevent you from giving up your job in a short time and limit you with a deposit. It does make money, but you need to know how much money you want to make. Money is realistic and can be earned, but it is not clear what needs to be paid. It's normal to drink and sing with guests, and even have the requirement of taking drugs to bed. I advise you not to go. Ordinary KTV doesn't charge a deposit, but it doesn't make much money, just over two thousand.