Scent of Salvation. (Chronicles of Eorthe #1) by Annie Nicholas.

Love blooms across species, culture, and time.

Stranded in another dimension, on a primitive version of Earth, Dr.Susan Barlow needs to find a way to survive. There´s no electricity, no cities, and to her shock, no humans. Instead, she faces a population of werewolves, vampires and incubi. The people are vicious but she must find her place among them. And live.

An illness is killing Sorin´s pack . As Alpha it´s his responsibility to save them, but it´s a battle this warrior doesn´t know how to fight. Then a blue light in the sky brings a crature he´s never seen. She calls herself human, but to him she smells like hope.

Sorin offers Susan a safe haven in return for a cure, but she´s not that kind of doctor. She´s a doctor of physics , not a physician. Yet as they search for a cure to save a dying people, they find something special --each other.

But even with Sorin´s protection, Susan can´t help but wonder how long she can survive in a world without humans...

Warning; Feral shifters, power hungry vampires, and a sole human female suffering culture shock.

This is the first of the Chronicles of Eorthe. 
Susan is a scientist.  She has developed a machine that could transport people to another dimension.  It's only been tested on a chimp so far. But now the government wants to take control.  She will destroy it before she allows that.  When Susan wakes up after trying to destroy her machine,  she is in a world of Shifters and Vampires. How can the only human on Eorthe survive without becoming someone's dinner.
Sorin is the Alpha of a small pack of wolf shifter. His pack is in danger of dying out because many are sick. This strange human may have been sent by the dark goddess to help.
Lots of very exciting action,  and marvellous characters.  Our heroine must use her brain to survive in a world where she is weaker than every other being . Our hero can't  always control what is happening. Sometimes the lower ranking among the pack can be heroes. There are several secondary characters with stories I can't wait to read.

Annie Nicholas hibernates in the rural , green mountains of Vermont where she dreams of different worlds, heroes, and heroines. When spring arrives the stories pour from her, in hopes of sharing them with the masses one day.

Mother, daughter,wife are some of her hats she happily wears while trudging after her cubs through the hills and dales. The four seasons an inspiration and muse