I remember reading once that one thing different about a female cat's anatomy is that they only have one opening for vagina/urethra: the urethra joins into the vagina internally. This allows them to 'charge' their vagina full of piss, then use all their vaginal muscles to blast it out. This seems to be an evolutionary development that helps them to spray to mark their territory. It kinda seems like what this woman is doing actually! It would be interesting to fuck a woman who could pee into her vagina during sex.
Me Thinks the uretha does defintely does not join into the female vagina. Maybe look at some medical diagrams of the female genitals both internal and external
Just saw a vid where Ana does a long slow pee. It was amazing, she peed forever, just a sweet slow stream. No start and stop and no spraying just a slow pee stream. She peed in a bucket and afterward poured it into 20 glasses