Ashes by Sarah Gilman
Accidents happen for a reason...
Journalist Ambrosia Pellerin accepts an assignment involving the legendary phoenix, expecting, if nothing else, a little entertainment. Instead, she winds up pregnant—by a surprisingly human-looking firebird, Reece Bennu.
As the Phoenix prince, Reece is next in line to the throne and expected to marry a purebred royal. A common human such as Ambrosia is not in the cards. He swears, though, he'll never be an absentee father.
As Ambrosia's due date grows closer, so do the soon-to-be parents. But will their tentative love survive the prejudice of Reece's grandmother, who will stop at nothing to tear the two apart?