The desperation in her words did make him shake his head. "Come now, Ms Scawton, or rather, should that be Mrs Vaisey?"
"We're wizards. Marcus, your son, myself. Do you honestly think we would have the wrong woman. I've used magic to prove this is yours." He was already growing tired of toying with her.
"Your words matter not to me, any more. I had hoped to possibly pass the time with some intelligent discourse, but I see that I was probably being a little too optimistic."
He turned to leave, but hesitated. "Of course, you are welcome to try and escape, although I think you'll find that the distinct lack of ways to get out, or even to attempt to kill yourself, will be sadly, lacking." She was nothing more than a muggle, and his only intention was to hold her against the plan he was conjuring against her son.
"My elf will attend your needs daily, and will not deny any reasonable request for items to help you pass the time. If your son complies with our wishes, I may even allow him to visit you, or let you write to him." He would not harm her much if Cassius complied.