Ugly waifish (small and thin) Doms dont really keep clients unless they have exclusive equipment (which then raises their prices a lot). Subs like their Doms exotic, feminine, and "Amazonian" - as in curves, which she was showcasing in the picture. Granted her face is a bit rough but she has the ability to handle most subs like they are weightless. A lot of subs like that and will pay well for it, and its very hard to find a woman that can flip a guy that easily that doesnt look masculine herself (hella muscles, hard jaw, etc.)
If she takes some Dominatrix classes, gets a dungeon, and learns English she could easily charge $1000 an hour and still be over booked. Women of her size that do this are very few and far between.