Like I said earlier, it gives an another perspective but it is not a one size fits all.
But 200k in cash equals approximately 400k as a regular revenue.
She is more on the volume versus the quality. You can read between the lines that she is not into it often with her clients. I do not think we can apply that theory to all the SW..
As mentioned by Julia, she might be in the body frame that everyone (except me) dream of having sex with.
If she can have serious objectives with her money but you know what, not my business
But given that it is her work, I do agree that unless you intend to it for a decade, a good planification is essential to leave without any regrets.
400$ per month for a personal trainer, it is a really big investment....