I just ran Jorgenfist and made a few changes. The party made their way to Longtooth's cave. Inside they meet up with the dragon. She (I changed Longtooth to female) berated the party for being dumb apes and threatened to alert the army of giants to the party's location unless they helped her.
She demanded the party sneak into the fortress and discover what treasures Mokmurian possessed. She also demanded the party retrieve two special items for her, implying that they would know what these items were when they saw them. I had a lot of fun gloating over the party as a dragon. When the party made counter demands I made it clear this wasn't a negotiation and demanded $1000 gold from each of them (this really peeved the party).
The party left thinking the items Longtooth wanted were dragon eggs and planned to blackmail her. The "items" were the two captured dragons in the fort, rewritten as Longtooth's offspring. Mokmurian was manipulating Longtooth through the use of her captured offspring. The two younger dragons were still charmed by the Lamia priests but the party managed to rescue them. When the younger dragons were set free I had another chance to berate the party for being stupid apes. This ruined the parties plans for blackmail and now they're planning a way to get back at the dragons.