Try a baby gate. Also does she react to you saying bye and walking away from her, our dog Pepper would only come to us if we said goodbye and started out as if we were leaving. Can you get an electric fence on your property? Does your dog have any obedience training? I found the words "leave it" work good for Autumn, she started out with just treats on the ground and my saying leave it and we worked our way up to things such as running into the street when her ball goes too far. If she stops and waits for me she gets lots of praise and a treat. Now she stops at the curb without my even telling her to leave it. This doesn't work on all dogs though so I recommend using a baby gate while trying to train her because if all else fails she can't get out in the first place.