This is only half of my theories. No, Gregory stealing and changing her Onlyfans password isn't a reason.

The answer to my question from earlier: Why was Roxanne Wolf crying? Really, the answer could be anything. (Except for Gregory changing her Onlyfans password.) Some reasons for this could include: A) Vanny abusing her through her AI, putting abusive thoughts in her head. B) She was worried people wouldn't like her anymore because she wasn't beautiful anymore (After she loses her eyes.) C) She wasn't able to catch Gregory. D) She could be upset that she was being put through all of this, which could have resulted in her cracking under pressure. E) Roxy feels like she needs to look her best, while halfway through the game, most of the animatronics start to look damaged and dirty. (Remember: She's only worried about her appearance, not what others think of her attitude. She even calls out to Gregory if she's still beautiful after she loses her eyes.); Having a mental breakthrough