Fangs for the Help by RK Munin

Cassi needs the not-so-legal type of help. Desperation drives her to try blackmailing a powerful vampire. She knows it’s dangerous, but she’s out of options.

What she doesn’t expect is for the vampire to make a counteroffer: Cassi spends one night with him and his two men (a gargoyle and wolf shifter) in exchange for his assistance.
It’s not a hard choice because the three men are gorgeous and Cassi’s single. After it’s all over, she can go back to her normal life—or so she thinks!