Washington State Department of Labor and Industries enforces Washington labor laws. You can file a claim online by using the link below. You will see detailed instructions, documentation you need and examples. You might also want to click on the “Workers’ Rights” tab near the upper right-hand corner (2nd tab from the right) to learn more about your rights.
https://secure.lni.wa.gov/wagecomplaint/#/
The US Department of Labor, Wage and Hour Division, enforces the federal labor laws. Use the
following link to learn how to file a complaint with them and what you need to do.
https://www.dol.gov/whd/howtofilecomplaint.htm
If the state and/or federal enforcement agencies can help you by investigating the facts and establishing what she believes happened, it will be the most cost-effective way to pursue yourclaims as you do not need to pay them any attorney fees.