The Lurkers Within by Danielle Bannister

Spirit Agent Tasha Young has never fit in. Her talents as a modern-day ghost buster make her a loner by necessity. Her job is an easy one. Enter a haunted house, remove the misbehaving spirit, collect the cash, and move on to the next city. When she and her team are invited to Havenwood Falls for a special case, she quickly discovers that this retrieval isn’t a simple bag and tag.
What lurks within is not one aura, but hundreds, and they all have their sights set on Tasha. With only five traps in her possession and a team member already sucked into the spirit world, Tasha is forced to come face to face with her greatest enemy: the Indrori.
If she can’t find her way out of the spirit realm in time, the Indrori will win the prize he’s been waiting centuries to claim. The future of Tasha, her team, and all of Havenwood Falls rests on the sultry black-haired beauty with the snake tattoo.