Theo shook his head. 'I have been slightly occupied by other things,' he said simply, not going into what those things were. Seeing how they were at Padma's funeral that should be pretty self evident.
'And I'd prefer not to use such methods on all others, especially Verity. Just contact Durmstrang and find out if he could have cast the spell. If he has the ability then that's enough proof as far as I am concerned.'