Mercedes Lackey

Her other main world is similar to Earth, but it includes clandestine populations of elves, mages, vampires, and other mythical beings. The ''Bedlam's Bard'' books describe a young man with the power to work magic through music; the ''SERRAted Edge'' books are about racecar driving elves; and the ''Diana Tregarde'' thrillers center on a Wiccan who combats evil.
She has also published several novels re-working well-known fairy tales set in a mid-19th to early 20th century setting in which magic is real, although hidden from the mundane world. These novels explore issues of ecology, social class, and gender roles.
Lackey has published over 140 books and writes novels at a rate of 5.5 per year on average. She has been called one of the "most prolific science fiction and fantasy writers of all time." In 2021, Lackey was named the 38th Damon Knight Grand Master. Provided by Wikipedia