"There's a sort of magical graft that the remakers do. I dunno how it works, but it does, although ..." She trails off as she gets down to the bone and runs her hand along the surface, feeling for a catching. "Although, sometimes they miss a bit and I come in."

"You pass me that file?" It's less like a proper file and more like a letter opener made of bone, but for her purposes it works the same way.