Hurrah, I've been looking forward to someone warning the city that an army was coming. Props to Mandy, plus "what if I show you my tits?" was awesome.
The snakes as books idea is genius, really well thought out. Books that bite!
I too have been hoping for a bit more theory-craft and activity round these parts, so here I go.
The medusa seems to be pulling all sorts of strings as far as I can see, what's unclear yet is why. She's organised a goblin attack to coincide with the arrival of a skeleton army and from the sounds of things has the city council enthralled in some way. My first thoughts were to try and rule the city, but why bother, she's about there now and could just turn anyone in her way to stone. Plus the medusa will be living right in the middle of the fight, unless she's planning a holiday sometime soon I believe there's more to it.
I'm thinking there's an ulterior motive underneath the carnage that's coming, I'd say a few hundred feet underneath actually. I'm wondering if all of this is so she can read the wyvern that's under the city, would need one hell of a big puzzle ball for that beasty though.