>>2349793Tough choice, I must say.
Demon's an attractive choice because it puts Daisy right in the middle of the action as a heavy-hitting melee combatant and it sounds like a rather cathartic and enjoyable way to fight.
Witch has a lot of context-specific tricks which would likely create a lot of novel situations (think about it, it's the potion route and see what we did with Medea's potions?) and flight is nigh-universally enjoyable to have.
Contractor is the path of Daisy perpetually being yanked around by contract loopholes, but going to the infernal plane and becoming the real deal Demon Queen would be very compelling as a plot.
I'm leaning Demon right now. I kind of like the feel of the explosive cathartic fighting style it lends itself to (and the unfortunate implications of only the skin being armor-like when you're flinging fire around), and on the side I like the idea of focusing hard on the most powerful option and seeing how far we can take it.