This mistress had had a lot to drink the previous night and she wanted to make sure that she was in the correct state to go to work. She could not afford to miss work and so she went to the bathroom and she induced herself until she vomited everything she could. Then she took a cold shower and went to the kitchen and took some soup before she felt good enough to go to work.
This mistress knew that this prisoner was a sissy and she would not have a hard time breaking him and making him do things her way. She wanted answers from him which she had to make sure she got in the shortest time possible. That is why she went straight to puke fetish to get him to talk. After she vomited on him, he told her everything he knew as he realized she meant business.