I control Mata Hari. I may play Dirty Contract on some minion
controlled by my predator, choosing Mata as the "Samedi in play".
Later, since DC reads Mata as Samedi only for the purposes of playing
the card, she cannot use its rush-granting effect. Nonetheless she is
still "chosen" for the contract and may play Open Dossier to block
that minion.
Correct?