SAN FRANCISCO—The motives of local woman Janet Debois, 28, came under scrutiny Sunday following accusations that she had only married Vince Davidson, 31, for his generous health insurance policy. “She wasn't even into Vince until he started flashing around his Blue Cross/Blue Shield card," said Carly Platt, a longtime acquaintance who speculated Debois might one day leave her new husband for an older man with a smaller co-pay. "You could just see the wheels turning in her head once she found out his dental plan covered twice-annual cleanings. Then it was a sprint to the altar." Sources close to Davidson confirmed he plans to use his wife as a tax write-off.