Things you might have tried....not that they would have worked...and they are very hard to do as they are counter intuitive.

-Turning and running in the opposite direction and making a big show of it.
-Falling down on the ground and lying still and waiting for her to investigate what was wrong with you.

The thing with chasing her was she had the security of her pack. Hannah had twice taken me on a chase adventure. The last time I lost sight of her, she came back in fairly short order. Now if she does get out of the front door accidently, I make a point of not going after her. I sit on the front step. She goes across the street into the neighbor's yard, but that' it.

Has your heart stopped pounding yet?