I did some more research:
Here is a link to the Washington state rules of court and with that links to rules for Juvenile court and your local county rules.
http://www.courts.wa.gov/court_rules/?fa=court_rules.faq31
This is information that you will need as you progress through this situation, some of the rules took effect 10-26-4.
Insofar as your safety, what you put online can affect you, you gave out a lot of information, however you did not give out your name or the city in which you live although you gave out the county and your place of employment. You may wish to edit and put in XXX in some places. Although this will be a part of the record of your attempts to legally gain custody and your good faith, remmeber this can be subponeaed so if you print it out, don't give out the "screenname" XXXX that out and anything that can identify you as this might go to the other party or they may look it up. We have had cases where both parties ended up on this site, and the one commiting fraud was caught. Right or wrong information in the wrong hands can be a problem so information stored on a server is more credible than a print out which can easily be altered, also important to authenticate anything entered as evidence.
In your county the search engine requires a name or a case number and doesn't allow a docket search by date. So your ex could have got the information online by a search and would or should have known there was an order if such information was posted, some case information is sealed.
I suggest you goto that site and goto search for your court date with your last name and first initial and see what comes up, then you will know what she and or her attorney could have found out about the case, as could anyone who knew your last name. Also put "your name" and do a search to see what is out there about you. when you check your online court records, understand that is public record so while Mom and GM know your address now, if you have need to move in the future, you are able to use a safe address and a nutural meeting place.
I also looked up the locations of Lewis Co and where mom supposedly resides on the Oly Pen, given these locations, not only is there a risk of interstate flight but also of international flight. For that reason make sure you ask the commissioner to take her and the children's passports, then contact the Department of State goto their parental child abduction sections and read the information there and take precautions to flag passports etc. also read the country specific information for Canada and Mexico.
Also see if you can get license numbers of known vehicles and any and all information to assist in potential flights.
Take your children to local PD and request fingerprinting they may send you elsewhere for this, so you might want to call first. Also get good pictures of your children and keep these updated frequently.
Although you have the children registered in school, you will need to request school and medical records records, make appointments for your children to be examined by a local doctor and dentist.