She seems like a smart lady but it gets on my nerves a bit when I see someone with her/my body type preaching to normal people. I’m sure she eats strictly and exercises plenty, to be so lean at her age, but 95% of us could do what she does and not even look like the same species. Meanwhile I look like her without even trying (granted I am active and eat a lot of protein - but I also eat a ton of calories and fat, and haven’t done any real exercise in months now).
Not to be negative; her advice is sound, whether or not you ever are small or lean, eating clean and exercising faithfully improves every aspect of your life in both the short and long-term, IMO.