Surnames for a Demon living in the human world

So, essentially my character's a demoness. Very fire orientated, but sent to live on earth for a bit for a kind of mission, as per se. (Well, she's being trained/tested but that isn't the point). I'm looking for a thematic surname that generally goes alongside these lines. I hope to develop the character further, but to begin with I'd like to get a name picked out and build from there.

She's edgy and hotheaded. Think if a random edgy 13 year old got their wish and got demonised. (She is, after all, a reclaimed mary sue from my /own/ edgy days). If there is something she isn't, it's subtle. So fancy names would be rather welcomed. Her human disguise/human form of choice would be half kenyan and half american.

Her first name is Jessica. I don't plan on changing this as this as it already has some irony. (It means God Sees, apparently.) Plus, she's had it since her initial creation back in late 2006.

Milton if you're feeling subtle

Infernus if you're not.

Sirius if you want weird references.

Brightstar if you want that oh so special feeling.

Iblis if you expect muslim readers.

East or von East if you're going for an Occult theme

Helsdotteir if you want her to think she's subtle but isn't really.

thank you for the suggestions so far! im really enjoying the Helsdotteir one to be honest Milton's good too, hmm. I might use Milton for another character I have in mind! :D