You're absolutely right (just a small correction- it's not Hellen, but Tori. Hellen is the milf bartender, and Tori is the redhead).
But 10-15 scenes - that's a lot, but not infinite. Sooner or later, they'll earn their 100 gold.
And now, here comes the signature plot twist from the ice cream vendor

))
They’ll earn their 100 gold, but who's going to earn 100 gold for the MC?
What happens when they actually have that money? What if… they take off, and we’re left behind?
Are we really sure Bianca will be like, "Oh my God! We need another 100 gold! Mark needs a ticket too! Girls- get back to work!"?
Basically, it’s going to be fun. I’m not saying there won’t be NTR - just that there won’t be as much as there could be, and maybe even the people who enjoy it will want to avoid it. After all, the game isn’t about NTR- it’s about
The Mansion!