I'm not using any mod just changed the code in my save file and don't think it is a problem for old files because I started my game on version 10.2 and had the same problem as yours also with the slutty interest selected so it might have something to do with that specific interest.
I wrote before I think I have had it aso with other NPCs that it can be that you can`t change to the interest. When it is a normal bug it is gamebreaking and so normal we need a 0.10.03 version (with a gamefix for this bug).
When normal it should be possible aso use sun lotion on her or make photos then this are other bugs. When it is only possible when you improved her why is this not clear in the walkthrough?
If you read about cheating he wrote when you have problems that the game take to long to load the saves are all corrupted because you cheated. The Question what means to long and so for me is the Question is this a normal bug.
Exist this bug only because you have cheated "maybe in the past" and when is it. Have the game corrupt all save files then is the Question are the save files aso corrupt when you start new or not.
His other Game "Superpowered" have had a lot of bugs and this bug normal see all players so why nobody report it before or why it isn`t fixed because it is gamebreaking?