In a word, usually, "no." When they go missing, it's usually for good. They are generally curious, not afraid of people, and will usually never miss a meal. Only time they may skip coming out for dinner is if the male is protecting eggs. If you see the male, the female should not be missing.
Good luck and I really hope you find her. I lost one of my picasso's like that and it put me through a week of hope and ultimately dispair. Never found that little bugger...must've been eaten by something.