What you have to understand, is that in order for her to get the maximum amount of money, she needed a long term strategy to increase the number of people paying, for which you need to have a lot of experience, and patience. Or seek the help of some one that has that experience, and that requires of self awareness that she doesn't have.
Taking money from horny pervs and simps, is no something that requires too much skill.
That's the amount in she wanted. But now that she's old news, not lowering the prices, and doing the same content with out variation, is not going to increase her subs.
That's depends on what she's willing to do. But if she wants to increase her subs, she definitely will need to go topless, or do full nudity. And since she doesn't want to do porn she has to take the artsy route, with videos and photos set's. While still catering to her current subs, so that she has the widest possible audience.
You have to see this from a point of view, of potential income. Of the amount of people that has 100$ for her subscription, and then 50$ per video, will always be exponentially less than that people that can pay 10$ or 20$.