Fed too well, perhaps.

I'll keep him a few weeks and send him home all right,' said Dr Watkins, as Don laid his great head in his hand, and kept his intelligent eyes on his face, evidently feeling that this man understood his trials, and knew what to do for him.
So Don departed without a murmur, and our three conspirators took counsel together how to spare the family all anxiety, and give Rob the rest his leg demanded.

Fortunately, he always spent many hours in his little study, so he could lie on the sofa with a book in his hand as long as he liked, without exciting any remark.

Being of a quiet temperament, he did not worry himself or Nan with useless fears, but believed what was told him, and dismissing all dark possibilities, went cheerfully on his way, soon recovering from the shock of what he called 'our scare'.
But excitable Ted was harder to manage, and it took all Nan's wit and wisdom to keep him from betraying the secret; for it was best to say nothing and spare all discussion of the subject for Rob's sake.

Ted's remorse preyed upon him, and having no 'Mum' to confide in, he was very miserable.