Agents should not be giving legal advice. Assuming this property is actually in the 98012 zip code, and not in Stockton CA, and that this was a non-judicial foreclosure, the answer is generally 20 days following the sale. http://apps.leg.wa.gov/rcw/default.aspx?cite=61.24.060 (RCW 61.24.060).
It is also possible that if the bank bids at the sale that they will give you longer, or that they will even pay you a small sum if you leave by a certain date and leave the property in good condition. This assumes Hope4lucy is the owner. If she is a tenant then there are federal and state (if Washington) laws which may allow even longer periods measured in months.
Hope4lucy should consult an attorney about her specific situation. There are legal services that might be able to help if she cannot afford to pay.