The problem is the fitness industry has moved on since Shiv got skinny and then binge ate her way back to average weight got into body building and then had a "come to Jesus" moment about how toxic diet culture is for women.
When was that, 2015? 2016? The social media industry has changed massively since then and so has the culture around fitness and women. Young women want to be fit and toned now, not starve themselves on famine diets like we did back in the early 90s/00s. I'm the same age as Shiv and did all the extreme diets and drank the koolaid on "nothing tastes as good as skinny feels".
There's more women than men in my gym now, and it's a large commercial gym in a big city not specifically directed at women. Same with F45, or any fitness class I take these days. Strong, fit women who are popping in at the start of a busy work day who have whole lives outside of it but are well able to do their homework on nutrition and enjoy their food and get fit at the same time. Women want to be strong, and are well able to educate themselves with the wealth of free info out there.
They don't need to pay through the nose for a glorified spreadsheet which they can find for free online anyway. And Shiv just doesn't have the pull power she had when she was younger and had her fitness model moment. She's a mess now. I've got lower body fat and a better figure and I'm lucky if I go to the gym once a week with how busy things are atm. I also probably make multiples of what she nets annually, have my own house, am happily married. I want to buy from someone who's got something I don't. In this case, fitness and a life that I can admire. What has she got, exactly? What can she teach me aside from what NOT to do?