Legal Question in Family Law in Washington

If you are handling this yourself, remember the old saying that is usually true: "He who represents himself has a fool for a lawyer." The short answer to your question is "Yes".

That said, if you are representing yourself, you will need to be familiar with the Court Rules (CR), found at http://www.courts.wa.gov/court_rules/?fa=court_rules.list&group=sup&set=CR. And also be familiar with the local county rules, which generally follow the same numbering, at http://www.courts.wa.gov/court_rules/?fa=court_rules.local&group=superior.

Interrogatories are part of discovery, CR 26-37. Rule 26(b)(1) states: "In General. Parties may obtain discovery regarding any matter, not privileged, which is relevant to the subject matter involved in the pending action, whether it relates to the claim or defense of the party seeking discovery or to the claim or defense of any other party, including the existence, description, nature, custody, condition and location of any books, documents, or other tangible things and the identity and location of persons having knowledge of any discoverable matter. It is not ground for objection that the information sought will be inadmissible at the trial if the information sought appears reasonably calculated to lead to the discovery of admissible evidence."

So if she is seeking child support, your personal bank statements may be " reasonably calculated to lead to the discovery of admissible evidence". Of course, you could make the same request of her. I have seen attorneys copy the other side's interrogatories, except for the attorney name of course, and changing any words necessary to have the questions apply to her instead of you, and send them back to the other attorney. After all, unless some questions are only specific to you and not her (which you could just cut out and leave a larger blank space without even the need to renumber), you could turn around and send them to her attorney and she would have to answer your questions. If the questions would apply to her, the attorney cannot very well say they are not relevant.