I hate when you find something lovely on SL marketplace but the store has all sorts of unrelated lovely things, so you have to assume they're all ripped.
Strawberry's version matches on the belly, and the second resonator is only different in color from the version I found on marketplace, which is full perm. So even if she bought it someplace else, that place may well have bought it from the seller I found. Or maybe there's a legit 3rd party selling 3D files somewhere on the web.
Found it on sketchup. Free download but it’s cc-by, so the SL shop I found didn’t steal it but is violating the license. And Strawberry may have brought it into SL herself.