I came over here after reading your post about Cassandra Claire's plagiarism on journalfen. I tried to leave a comment there, but as I don't have a journalfen account and for some reason, I was not allowed to create one at the time, I decided to leave this comment here.
Now, I don't know if anyone's mentioned this to you yet, but as I was reading Susan Cooper's "The Dark is Rising", I found a passage that seemed rather familiar:
From Susan Cooper's "The Dark is Rising" (Pg. 8):
"I have something for you." He glanced briefly round the yard, and withdrew one hand from his pocket; in it, Will saw what looked like a kind of ornament, made of black metal, a flat circle quartered by two crossed lines. He took it, fingering it curiously. It was about the size of his palm, and quite heavy; roughly forged out of iron, he guessed, though with no sharp points or edges. The iron was cold to his hand.
"What is it?" he said.
"For the moment," Mr. Dawson said, "just call it something to keep. To keep with you always, all the time. Put it in your pocket, now. And later on, loop your belt through it and wear it like an extra buckle
From Claire's Draco Sinister, after Harry receives the runic band from Charlie (Pt. 15):
Harry stood in the shadows beside a tapestry and looked down at his wrist. He had extricated himself from Cho, only to be swept up by Lavender and then Parvati. He was glad to see them all, but generally felt secure when dancing only with Hermione, who knew what a dreadful dancer he was and did not mind. There was also something else troubling him -- the band Charlie had given him, which rested awkwardly around his wrist. He noticed that as he danced, moving between the close-packed dancers on the floor, the band would change temperature, becoming blazingly hot one moment, scaldingly cold the next. He looked down at his wrist, chafed red and raw now, and wondered what the hell it meant.
"Probably not." She pointed a long finger at the band around his wrist. "But if I were you, I would thread that like an extra buckle on my belt
, not wear it so obviously on my wrist, inviting trouble. If you are determined to keep it, that is."
"I´m determined," said Harry.
"Yes," said the girl. "Yes, you are, aren´t you."
The buckle-thing Will gets also turns hot and cold at different times. I've not read far enough yet to determine whether they serve a similar purpose, but even so, it sounds like another strange, uncredited homage. Maybe I'm making too big a deal about nothing, but when I read Susan Cooper's TDiR, that phrase stuck out in my head and I remembered it from Draco Sinister.
I'd just like you to know that I had been a fan of CC's Draco Trilogy ever since getting into the fandom over six years ago (I believe) but reading your account of the debacle makes me view all of her writing in an entirely different light. Thanks.