
she can probably still smell where she has been and marks there again. You need to sue a cleaner that does not contain ammonia such as bio washing powder. Also restrict her access to these favourite spots. Even if it means barricading the dishwasher when you leave her for short periods.
It isn't unusual for a pup to need to wee again after 10 or 20 minutes if they are doing something exciting, and go longer if they are sleeping. they are not yet at the stage of full control for wees, when they need to go it is pretty immediate.