Antonin finished cleaning up the Dark Magic, then waved his wand at the potion bottles on the floor - they'd only been filled with water, just in case - and they flew back into his desk drawer.
He grinned at Justin. "That was not a bad exhibition of Dark Magic, the attack variety. She's very powerful, but not very focused. Hard to tell how much is lack of training, and how much is her addiction interfering with her magic."
"Oh, dear me, Justin, she's only in the holding cell in the basement." He chuckled, "Not too large, but not really uncomfortable. Extremely well shielded against all sorts of magic." He smiled, "I told the elf that runs the house not to let the cell dump its current occupant into the Dolohov Castle dungeon, a much less pleasant place, staffed by most unpleasant people."