Find Stephanos outside the Exodar and purchase a hippogryph ride back to Blood Watch.
Here's the box, [player]. That should be enough for Topher to get the inn up and running. Let him know that he can keep sending in orders as the need arises. Blood Watch urgently needs a place to care for the wounded and put up any travelers they receive.
When you're ready to return to Blood Watch, seek out Stephanos near the gates of the Exodar.