The Castle of Wind and Whispers by Steffanie Holmes

Now she’s returned from the dead, Maeve’s mother reveals the secret of how she defeated the fae twenty-one years ago. That secret will cost Maeve more than she could ever imagine.
Briarwood is no longer safe. The castle walls have been breached, and the coven’s enemies batter at their doors. The coven have two options left – surrender, or die.
Maeve Moore doesn’t do ultimatums, not when she’s got five powerful men, an ancient witch, a prostitute with a heart of gold, a faithful sister, and the ghost of her dead mother on her side. Plus, her ancient castle still has a few tricks left to reveal.
If the fae want Briarwood, they’ll have to come and take it.