One, a robot may not injure a human being, or through inaction, allow a human being to come to harm; Two, a robot must obey the orders given it by human beings except where such orders would conflict with the First Law; Three, a robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.
Even now, despite Angeline's watchfulness, she'd occasionally oscillate between random topics, like how shepherd's pie wasn't a pie at all and why it was pointless for her to take class in typing when technology would eventually develop robot companions to do it for us.
If you want to write a fantasy story with Norse gods, sentient robots, and telepathic dinosaurs, you can do just that. Want to throw in a vampire and a lesbian unicorn while you're at it? Go ahead. Nothing's off limits. But the endless possibility of the genre is a trap. It's easy to get distracted by the glittering props available to you and forget what you're supposed to be doing: telling a good story. Don't get me wrong, magic is cool. But a nervous mother singing to her child at night while something moves quietly through the dark outside her house? That's a story. Handled properly, it's more dramatic than any apocalypse or goblin army could ever be.