I have seen this problem before and it was caused by very young pups not being kept in a clean environment. As in the people who had mom and pups didn't keep the pees and poops cleamed up so they were in filth all the time. It wasn't bulldogs btw so I won't use the yerm breeder it was just an irresponsible owner.
Is the crate small enough that if she goes she can't get away from the mess?
You may try feeding her in her crate in hopes that she still jas the instinct not to mess where she eats .