Gruff Garrett - The Old Lawdog - Hope and Despair. Gruff Garrett Series, #4

Alisa Pemberton a young orphan, rides into a small town looking for work and a fresh start. She just lost both her parents and is now for the first time in her life, truly alone. She finds work at the local saloon as a lady in waiting. The bartender seems quite welcoming, and for a young girl like Alisa, it seems like a great opportunity to start a new life for herself. After two years working in the saloon, she realizes that it is anything but a fresh start.
The work conditions are harsh, and her employers take most of her earnings leaving her with little for herself. Worst of all, they don't want to release her from her work obligations any time soon.