Dispater watches with seemingly infinite patience, as they hammer through the contract to something that Pilar no longer wants to make self-fulfilling prophecies about, with Dispater occasionally rejecting some proposed wordings Himself.
They could probably take a year at this and Dispater wouldn't especially notice.
What is to be the disposition of souls Sevar 'owns' while she is not yet herself a devil, let alone a Power of Hell, that could exercise effective ownership of them?