Dude there is not a chance in the world she’s continent. Women have urinary continence issues even before they go to pound town on their pisser with a makeup brush handle. She just dribbles constantly, like a lot of women. Which must be an exquisite constant throbbing after a hard session like that. But she obviously gushes when she squirts, so you could mount her ass and fuck her til she sprays. Get her in a nice state where she’s coming from the dick and coming from the agony at the same time.