I'm thinking something got lost in translation there?
I think Camila is kinda ashamed of her prostitution. That discussion in the prep boardroom kinda indicated that.
I'd have to say a girl prostituting herself out because she feels she has to (to pay for her tuition or whatever) is kinda fucked up.
I'm sure there are a lot of sex workers out there who love what they do, but those who are ashamed of doing it but do it anyway, that's gonna weigh on their psyche.
I'm not a subscriber of the miscarriage (or worse - stillborn) theory, but it suits the darkness of that scene and fits well enough with a broken marriage and messed up emotions that Bella keeps going through (and it even explains the hidden room).
My experience with miscarriage (not me physically...) isn't so dramatic, but then I guess the theme of this game is, if it could be dramatic, it is!