I think a lot of what she does is her exhibitionism and she uses that to earn her the extra money. Her shows while entertaining us are also entertaining herself. The way she smiles at herself when looking in the windows. To get the kind of contract she has she had to have said she is willing to dance and get naked etc. When she did more that was down to happy juice and not something she had planned in advance.
I also note she put her stuff all neatly back in her wardrobes last night with no sign of packing anything up to leave yet. I still hope she is here until her visa expires!