Demon in the Mirror by the late Andrew J. Offutt (
ISFDB,
Wikipedia,
SFE) & the late Richard Lyon (
ISFDB) is the 1st novel in their War of the Wizards trilogy of swashbuckling adventure fantasy starring a young woman who goes adventuring on various quests to find items and defeat evil, as you do, this installment kicking off her lifetime of adventures as she quests in search of her missing brother, going up against an ancient evil who may prove the risky key to finding him, and the assorted forces who stand in her way, free for a limited time courtesy of publisher Endeavour Press' Venture imprint.
This was originally published in 1978 by Pocket Books and later reprinted as part as their Timescape line with an additional
The prefixing the title. I'm just going to note that this story apparently contains vampire nuns, which gained it automatic bonus “so cracktastic it's awesome!” points even before the werehawks were mentioned.
Currently free @
Amazon (available to Canadians & in the UK and pretty much everywhere else worldwide that Amazon sells, since this is being done via their KDP Select exclusive or else program)
We've previously received the
2nd in series as a freebie as well, so you've another to move onto right after this one if you like it (and Endeavour usually prices these things at a reasonably low cost to begin with and generously drops them further during promo sales, should you happen to have missed it earlier

).
Description
Tiana of Reme seeks to find her lost brother, and will do anything to get him back.
A fast paced fantasy, Demon in the Mirror follows the adventures of Tiana, a fearless heroine who is prepared to go to whatever length she must to solve the mystery of her missing brother.
In order to do so, there is one figure upon whom she must seek vengeance: the evil Demerral, whose body is scattered across the land – preserved to prevent his return.
Is Tiana prepared to face this force of evil and risk unleashing him to the world once again?
Fighting vampire nuns, demons, barbarians, werehawks and killer plants, Tiana must keep a clear head and strong heart enter the battle of the Wizards.
Along the way, she encounters characters good and evil, battling those who want to hurt her, and learning from those who help.