That rabbit might have some Mini Satin in her, but if she does, she has a whole lot of something else in her as well!
Her type isn't a lot like a Mini Satin, and not at all like a Netherland Dwarf. She looks rather long and rangy, particularly her face and ears - I kinda suspect she might even have some English Spot in her, there's a fair amount of daylight under her in that picture by the cabinet. Mini Satins are only supposed to be about 4 pound rabbits, with compact, solid bodies. How much does she weigh? She just looks bigger than 4 pounds.
Her color, which is called Chestnut, is really neither here nor there. The Mini Satin is a new breed, so they can only be shown in a handful of colors. If I were to breed those colors together, I could come up with a whole bunch of unshowable colors - just 'cause you can't show 'em doesn't mean they don't happen.
The defining feature of the Mini Satin is its Satin coat. The Satin has a thinner cuticle on the hair shaft; the hair is slightly finer and has an almost glassy sheen. The color of a Satin is just a bit deeper, more intense, because of the thinner cuticle. I'm not seeing any of that on this rabbit, it just looks like normal hair on her.
So yep, gotta go with a mix on this one. Looks like she is well loved!