Not enough details and glad you’re not shouting… If both are legal CA residents (dr licenses, voting, tax home) then follow the w2s. CA resident and WA non res. Not really familiar with state rules on the left coast but that’s basically how it should work.

Or, if spouse in WA spouse establishes residency in WA, then, they could file MFJ federal, and each file their own respective state returns. You’d have to check each states rules for filing status.