The thing is, I like the 'male locker room' environment of games like Karryn's Prison. It makes the atmosphere less... forgiving? Jenny is supposed to be the object of desire of most guys coming to eat at that awful place, and they wouldn't even go there if it wasn't for her.
So, making mostly hetero females going there to just eat that garbage, without the chance is appreciating Jenny's charms... let's say that's the thing that wouldn't make much sense.
Also, they're called gang-bangs for a reason...
That said, you'll see another girl at the restaurant soon.