My dearest Watson –
I understand from his letters that Sherlock has had some difficulties recently, both legally and with respect to his sobriety. I worry about him. Despite his many fine qualities, Sherlock does not possess my patience, and would fail to thrive in captivity.
I've done all I can, over the past few years, to ensure Sherlock has the support he requires. Apparently those measures have been insufficient. That's very disappointing.
Of course, I am aware Sherlock has other powerful champions, besides myself.
With warmest regards and sincere hopes for your continued health and happiness,