Caged Heat by Milly Taiden

Samira Suarez’s grandmother died, bringing her home after five years. Surprisingly, grandma left her millions of dollars and the family got zero. Such a great way to warm her presence into everyone’s heart, right? Sam doesn’t care about the money except for the line in the will that reads if she dies within thirty days, the family would get the cash. Say what?
Riel Karven, wolf shifter, has been waiting five years for Sam to return. He’s been giving her the time she needs to explore the world, but that time is up. He knew she was his mate before she left. Now that she’s back, he’s keeping her. And he’s going to show her what five long years without the woman he wants does to a man. They might need a new bed after this.
When Sam is injured, Riel goes into overprotective mode. Someone in Sam’s family wants her dead for the money. He has to hunt down the stalker if he wants to save his mate. Unfortunately, the person they are looking for isn’t even on their radar.