Your dog is not a toy. I don't mean to offend by that, but you should let her relax if she wants to. Some dogs just don't want to play all the time. If she only plays outside, bring her outside. Like other people said, you don't want to over work her. Dogs sleep a lot. They are nocturnal, and naturally want to sleep during the day. Many adjust to being awake during the day more, but you can't expect them to only sleep when you want.