I’m actually just here to second the recommendation for A Practical Guide to Evil. I don’t know if it’s quite as good as Worm, but it’s at least ahead of Ward on the web serial listings. The drawbacks of it would be… probably just that it’s a little more scattered, in general. But the pros are that it’s genuinely funny, quick-witted, and intelligent (in an entirely different way from Worm). Catherine feels like a Taylor who enjoys her powers.
So kind of like Worm, except fantasy and with more humor? Sounds right up my alley!