Police respond to report of domestic argument near the beach and vehicle leaving the scene with the involved parties. Officer spots described car and stops it without seeing any moving violations, but notices cracked windshield after stop. Officers separate the driver from her boyfriend passenger to get stories. Police note driver displays a slight odor of alcohol, consistent with her admission of one drink earlier. Despite no further evidence of impaired driving or domestic violence police detain driver for field sobriety testing, arrest her, and she later submits to post arrest breath test with .10 BAC result. Defense prepared to argue Motion to Suppress illegal expanded detention for DUI investigation. DUI charge dismissed prior to trial.