Peroxide is not recommended because it damages healthy tissues as well as infected ones.. If she is having any other problems like canker sores, there is a rinse aid called Vince (found at most drug stores) that works wonders. If her gums are swollen and bleeding try Gly-oxide. Tastes yucky, but it oxygenates on the gums bringing healing as well. This is recommended by dentists for gingivitis. Susu




