Try it the other way around. When she does it inside, ignore her completely. Don't feed her inside... Pretend like she doesn't exist. Every family member should participate. Put her outside even.
When she does it outside reward her. With some food she really likes. So she'll start asociate doing it outside with getting a reward.
Instead of punishing her for doing it inside, reward her for doing it outside.
<img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
-Somehow I think she doesn't like to go outside in general. There's probably a reason for that. <img src="/ubbthreads/images/graemlins/think.gif" alt="" />
