Yvette isn't shown in SPA- Sauna
Renee, Heather, Faye aren't shown in SPA- Massage
Have to ask, you are of course going on days the sauna is co-ed? Check the Guide for the easiest way to find Yvette in the sauna. You have to sit in the chair in the spa. The others should show up without any problem as long as the spa is open. Unless you have Borked your game with the over use of console codes trying to manipulate what is going on.
That's what's meant...
But, by the way: is there really someone outer there who tries to get through this kind of programming without mod or console command?
As soon as you prepared a scene to may happen, the programming is done to work against players success to do so....
e.g. Ivy corridor breast bump scene but I have to admit, she is programmed to don't loosen her lust as soon as others.
Whereas MC does sports, reading, is taking a shower and other actions and never could lower his lust like someone in real world would. Well, he somehow manages to loose some when he is getting a body massage. That's ..... twisted?
Some logic for the Ivy breast bump event:
let's say you got Faye, Aly and Lacey on the island too.
All of them got an randomized and conditioned event trigger at the same spot.
What do you think, your processor is working with at first? The first code written? The second one at 2000 lines of code later? Or do you think, the randomized programmed 3rd event trigger will happen really randomized 6000 lines of code after the first one?
In between, there are several other events at the same spot but without prerequisites/conditioned.