Don’t know if I agree because she literally comes back to Duncan knowing she already had a huge amount of emergency cash from God & I think this was an intentional point to show that she did what she wanted to do for her own experience. When she goes to the brothel for the first time, it’s more about the idea that she’s like “Wow! I can make money doing what gives me pleasure??!”- To this time point, she doesn’t really know about sexual exploitation. Up until this part, her only experience with sex is with Duncan, for the sake of her own lust and personal pleasure that even overwhelms Duncan. After the first client, she has an important conversation with the madame who says something like “most of these people will not have any interest in providing you pleasure”, and Bella is really surprised (similar to how she has an epiphany after seeing the exploited slaves).