The Spiritwalker Trilogy is very different from Elliot's other works, as I understand (I have to admit here that they're the only works by her that I've read, so I'm not the best person to ask!) --as it has a more YA and alt!Victoriana feel to it, but I can definitely see people bouncing off of them. I enjoyed them as an entertaining romp, so er, maybe check the first one (Cold Magic) out of the library to see if you'd like the rest?

Is this the Hogwarts fusion AU? Because if so, YES, yes, you absolutely should! I still remember reading that one for the first time with absolute delight once I realized where it was going and who everyone was and how perfectly it all fit into both JKR and DWJ's worlds. Not to mention that anything with the Argents is fascinating, particularly "A History..."'s much more antiheroic versions (at least they are in my head--alt!Ralph Argent might be a hero in the war with Grindelwald, but he's still Ralph Argent. And Ophelia/Miranda is never going to be a well-behaved woman in any world, I'm afraid.)