Pretty much.
Of course, Chaos didn't come from Pandora's Box.
The Lunar Shadow apparently DID, but I'm not 100% sure how, and this Pandora is a Serenthan goddess - her box was stolen, and works differently than the Greek myths' box.
Repose Horton DOES have Soma's copy ability, though. As part of her Purity Taint, apparently. (Oh my.)