Thanks for your help. I am sure the one with son are resident of California. About the other one in WA, it is very clear, when I asked her, do you want to be there after 4 years and family join to you live in WA, or want to back CA? Said, I do not know depends on the job. We can not think about 4 years later. based on my explanation if you need something else let me know otherwise I would like to find out how is going to be their filing status.