That gal is first model I sculpted (sans head - head is DE Wytch).
She was meant as my old Escher captive in Rescue missions, but her base looked bare and boring. And those rails were super cool
She is very handy as captive in scenarios or scenes and rail is not always fitting but her origin is in underhive.. AFtr about 15 years I would sculpt her chaind to the rail now, but that will bea project for my NeoMunda Escher captive