My 2 cents on engaging the owner - I would probably just ask for a favor. Suggesting that you need dog company, rather than that the dog needs more human interaction.. "Hanging out with your dog is really great for me, would you mind if I taker her out for a walk with me every now and then?" Hopefully agreeing will actually make him feel good.
Yes, thats a good angle. Thanks.
I could also use that as a way in to eventually requesting to take her with me when I leave perhaps. That might be her best pathway to adoption.