I’m trying my hardest to picture how one would attempt to wash a vagina with a bidet, and the only conclusion I’m getting here that makes any sense is that you probably don’t even know what a vagina is.

I have a potential solution:

She executes the Riker Manuever, and sits on the toilet facing the tank… or more crudely, she mounts the toilet in cowgirl position.

Granted, she’d probably still have to do a bit of angling… and… probably not gonna actually get much water actually into the vagina, unless the bidet is… dangerously poweful in psi terms, basically?

… or possibly she is still considerably aroused?

Disclaimer: I do not possess a vagina, but I am at least aware of basic human anatomical configuration.