[qoute]Because it is her primary homestead, and community property state, I believe she has a right to rescind.[/quote]
Every community property state has some different twists and I'm not an expert on Washington's laws. However, I'm not aware of any state that automatically grants the spouse ownership, especially when the "Wife signed a quick claim deed signing away her interest in the property to the husband."
While you can always overkill the RofR, I don't believe it is necessary in this case. Like you said, you might want to discuss it with legal counsel.