Holmes vaguely heard Watson arrive, and was almost asleep again when he heard Russell call quietly to Mrs. Hudson. At first he tried to stay in bed. Russell and Watson should meet on their own terms. Holmes quietly tended to his morning ablutions.
Donning his dressing gown, Holmes listened. Watson and Russell were getting on fine, no doubt due to Watson's natural way with the fairer sex. Still, he wouldn't interfere. Then Watson said something Holmes couldn't ignore.
"…and brought back my truest friend from the grave."
"I'll not have you worrying the child!" Holmes intervened.
Russell laughed, and understood.