Being fresh on the subject.....It is perfectly legal to fire someone for almost anything in washington state. We're an Employment at Will State. That means at any time, either party can end the employment relationship if there were no express contract defining the relationship and the employee does not belong to a collective bargaining unit (union, association, etc).
I doubt your GF belonged to an secretary or optometrist union, and had a specific contract until the end of the month when the "shop" shuts its doors.
She's not my GF. Lacey's just a friend. Cassie's my GF, sorry just had to make that correction.