Wait to see if the judge asks you any specific questions, then wait for the decision, which is usually mailed to you (at least here in CA they don't decide right there and then).In the meantime, if your court date won't be soon, you could follow the other procedure for paying your rent to the ....I'm forgetting the term ... the court that handles these situations, that was explained in an earlier link. 

When I managed the program for language and cultural support services at the hospital where I worked, we looked into whether we needed to provide written translations of documents requiring patient signatures for medical procedures and other services provided by the hospital.

Most likely you will need to follow the legal procedure outlined for abandonment.

Even so, if the son doesn't communicate with you about the matter, you may need to proceed with abandonment procedures.

I've heard 60 day notice is standard procedure?

Obviously, each area is different, but what are the general procedures for filing legal abandomnent? 

Think through scenarios and set up a procedure manual to guide you.  

I suggest following the letter of the law and create a written policy, procedure and checklist for dealing with eviction timelines and tenants possessions consistent with local judges' interpretation of the law. 

This means that a disabled tenant can expect the landlord to adjust rules, procedures, or services to a reasonable degree in order to provide an equal opportunity to use and enjoy her dwelling unit or a common space.

I don't know OR law, but make sure you do the move-out by the book, including any notices that are supposed to include the law regarding their rights, any pre-move-out inspection procedures, etc., etc.