Yesterday, I got a very lovely reply.
The letter was written by Commander Anne Sullivan of the Royal Navy, who is the Assistant Private Secretary to Anne. The letter is formatted like your usual BRF Letter. This one does not have the body of the letter situated as nicely between the folds as others.
As you can tell from the date of my letter and the date of the reply, they answered my letter almost immediately when it was received. The Reply was mailed the next day, April 1st, and took the usual 5-6 days to arrive in the States. This is currently the quickest response I have gotten from a member of the BRF.