I would say she is housebroken.  Even housebroken dogs will have the occassionaly accident.. but that is usually because 1. the owner didn't let the out 2. they are mad it you.  lol
Puppies don't become adults until age 2, after that they usually mellow out. (I'm saying usually a lot because it really depends on the dog.
Having a dog really is like having a child.. although not quite as much work 
