Oh, yes, Chicken Soup for you. Schnickschnack goes off, searching for recipes... "Oh, no, that was the purple worm poison... wait, here, the cockatrice soup... it's poultry, too, right?"
* wishes a quick recovery *
Schnickschnack shakes his head "Nothing to use a wish for, really."
Okay, I have read through old posts and the campaign book, and I think there is enough to do still.
Before you left to find the source of the river's poisoning, Eldwyn said: "Well looking over the list I'd say finishing what we've started with the library, the Kobolds or the Graveyard makes the most sense."
Those three are still open. Mantor's Library has been started, but not finished, yet.
The current list of missions (what you know from before your upcoming visit at the Council Hall) is found here (3rd post):