The woman's name was Helena and she was only carrying a suitcase. In it, she carried everything that was her possession. Andrew immediately deduced that her former boss was not treating her properly.
This conclusion was not based on the fact that the lady had any physical injury or damage, what led Andrew to that conclusion was her baggage. Courtesans and slaves are not so different, the only difference was in a certain way the treatment.
While slaves had a soul contract that allowed their masters to dominate their entire existence, courtesans had certain privileges. Among those privileges was the ability to earn money.
Certainly, courtesans generally owed a monetary debt to their boss and therefore had to work sexually to pay off that debt, it was also true that they were entitled to a portion of their earnings, which allowed them to buy items for their personal use with their own money, but seeing Helena's small luggage, it was easy to see that she did not receive that money.