St. Marys is, indeed, the middle of nowhere (basicallly, in the middle of "PA farm country"...) Your best bet would probably be to drive to Erie to find an actual provider (though pickin's are kinda slim there too).
Alternatively, you're about a 90 minute drive from Pittsburgh, you might consider that too.
I've spent a fair amount of time in that region, and it really is out in the boonies. I've never found anything "fun" to do out there, and I've looked. There doesn't even seem to be much (if any) activity at the truck stops along I-80 in Brookville. There was a couple advertising on Craigslist last week (in "Casual Encounters" in the Pittsburgh section) that said they were in Brookville. I wouldn't be surprised if they were the only couple in that whole area who actually have sex.
(OK, that's sort of an exaggeration - but that's how it's always seemed to me...
)