If has s good bit of prey drive introduce.some Boar piss..
Rig up a pole facing down on 4 wheeler or mountain bike,. Have a durable rope she likes and soak it and get it on that rod securely where its draggin.. get In a good area and you'll need good recall and work your way up to it..
But take off rope draggin, about 20 to 30 seconds later have someone release her ti go after it.. you'll need to go fast enough to where she can't catch it but slow enough to keep sight..
Start with a baseline of 10 miles, 5 if really out of shape.. build your way up..
I do something similar during pre season get em ready.. works well for conditioning if you want to keep her lean and toned.
"It takes courage to grow up and become who you really are" - Cummings
"If think you can't, you're right. If think you can, you're right." - Hatton