the brothel summary requires some cleaning up
Each turn, there are 5 "Event" in the brothel: the day flavor text, day summary stat, night flavor text, night summary stat, and total customer
merge the day flavor text with the day summary stat into a single column, same for the night. 5 "Event" just clutter up the gui and makes looking for the necessary stat more annoying than needed. Best case scenario is to merge all 5 "Event" into a single column. Also, if you plan on keeping multiple "Event" in the brothel summary tab, rename each "Event" into something meaningful like "Day Summary" and "Night Summary"
Why is there a "day" and "night" job? I know it adds flavor to the game, but gameplay-wise there's no meaningful interaction between a turn with a 2 phase vs 2 turns. There's nothing wrong with non-gameplay flavor... but in this case, the day/night phase job selection interface is annoying. Best case solution would be to solve the job selection interface, maybe changing it into a dropdown menu from the girl list--although I imagine this requires significant re-coding. An easier solution would be to split the "Job" column at the bottom into 2 column, a "Day Job" and "Night Job".
Color coding bad traits would allow players to quickly judge the girl at first glance--making buying or detail viewing much smoother.
Color coding the jobs the girls are good at or bad at in the job selection interface would help too.
This is all the suggestion/criticism I could think of at this moment. Good game so far.