Hel sat down and thought.
She thought her throne.
She thought in her bed.
She thought when she was greeting new arrivals, few as there may be.
Hel wanted out.
It turns out that getting out of Helhiem wasn't the hard part (Hel had had a lot of time to practice her magic). The hard part was finding a realm that Mother's… Mischief hadn't touched. Any child of Loki's would find themselves dead if they were to enter several of the neighbouring realms.
After some deliberation, Hel chose Midgaurd or 'Earth' as she supposed she should call it. She chose a name, a face. She created a life for herself.
Midgaurd, meet Darcy Lewis.
She decides to go to college, to immerse herself in Midgaurdian ways. If she doesn't understand what a toaster does until someone shows her, well, she can always be that weird girl with the great boobs who came from a really conservative Amish family. Several millennia too late, but it serves her purpose well.
She sees a poster one day outside her favourite near campus coffee shop that says someone wants an intern for the summer, in New Mexico. She signs herself up, and suddenly she's there in the dusty desert looking after two scientists who don't speak non-scientist before their morning coffee.
She realizes one morning before she's had her coffee that she and Erik are speaking Old Norse. She doesn't think he notices, because when she switched back to English, he follows. And if there way a little bit of magic involved in forgetting that peice of information, no harm, no fowl.. right?
Uncle Thor drops put of the sky. It's as bad as you'd think, when the last time she saw him she way being dragged away from her mother and brother and being cast into Hel. Only because he doesn't realize who she is and the fact that Jane and Erik are watching stop her her from casting a curse on him apon sight and recognition (well, it has been over a thousand years since she has seen him, her memory has gotten a little blurry with hate).
Hel thinks that even thought Jane doesn't know who she is, that Jane must have some inkling, because when after Thor goes back and Hel wakes up screaming for mother, for Fen, to "let me out, please!", Jane merely comforts her, not prying or questioning. Hel pretends not to notice that after that Jane makes sure she never falls asleep on one of the steel lab tables. Hel thinks it's the cold of it that reminds her.