With the help of Kyne, their letters always arrive safely without taking up time from the Black Horse Courier riders. Lothran thinks they live dangerous lives enough as he′s helped them twice from getting killed in a short amount of time.
Buffy and her mare Superian later ran across the rider in question. Including Buffy, there are only five women in Cyrodiil that ride black horses, and four of them do so for the Courier. Sure enough it was Surani, a spirited young Breton raised in the fine horse country surrounding Skingrad. She was quick to tell Buffy how kind and brave Lothran was. Buffy smiled, because she already knows.
Hopefully, based on what mirocu and I have posted here, you can see that Lothran and Buffy absolutely live in the same world. And for that, Buffy feels she is a lucky elf.