Bonds of Fire ( the Bellum sisters book 2)

You need to read the first book. It will make a lot more sense, if you do.

Willow is on the run from her shifter. Like her sister, she wants nothing to do with her fathers will and the way, he gave them away to men they didn´t want or knew. Suddenly a demon is shouting her name and she must flea. Her shifter traced her and when he finally catches up to her, he takes her back to his pack. She fights the attracting with all she has, but soon she loses the battle against him and the demon.

A very good read.
So this is Willow´s story. I liked her a lot. She gave her shifter a run for his money. I liked that she didn´t just lay down and accepted her fate.