He hadn't expected her to be strong, but the fragile looking little halfblood was stronger than she looked and for a moment, he nearly lost his footing. Nearly, but not quite.
Inspired, egged on by the feist in her, he laughed as he let his arm wrap around her neck, squeezing off her air as he turned his hip to force her harder against the wall, though it took almost all his strength to do so.
'Not so fast,' he growled back, a laugh still in his voice. 'I'm not going anywhere.' Letting his wand point straight in her back he muttered a soft spell, watching her as the spell slowly worked its way through her system, making her feel as if her blood stream was filled with small burning needles. It wouldn't cause her any permanent damage, just pain, but it was causing her pain that he was after. Oh how he loved to watch the filthy ones bleed and cry and whiter in pain until they begged for death.