He picked up his wand from where he had laid it during the murder of the house elf, torn between a scathing rebuttal and simple silence, the desire to simply run back to the house strong within him.
But something wiser prevented him from doing so, as he fairly bit his tongue to respond to her last words. "Go on, get cleaned up, and meet me at my house, we can still my mum to take us out, I know we can...."
He moved closer to where she stood, leaned in close enough so that she and she alone could hear him - only for her would he play this part, although he would do it well - "I'm sorry," he whispered, before he turned and walked back in the direction of Lestrange Manor, never stopping or turning around lest she see the uncertainty in him.