We do have a very healthy and active 6 year old female retiring from our breeding program soon. She is fully health tested with certified normal hips and elbows, she is also DM clear and clear of all Embark tested diseases. 
She is a very well mannered dog, open and social with people. She's also great in the house and settles well. Very clean and quiet dog inside, she does great in the crate and excellent for car rides. Great recall and absolutely loves to work and play ball. Please reach out to see if she's a good fit!