Three things can be counted as certain in life: death, taxes, and Queen Elizabeth sitting on the English throne. The long-reigning monarch (longest-reigning, we should say) has experienced all that a queen could expect to experience during her time on the throne of England, and then some. Yet all good (great) things must come to an end. The Queen, impossible though it might be to concede, is a mere mortal like the rest of us, and the past two years have most definitely exacted a toll on her. In fact, 2021 might go down as her most arduous year to date given the…