Try to stay calm, and don't forget to breath. If she sees you, be pleasant. Don't run away, but don't linger. Maybe, "I'll let you get back to the treadmill, I'll see you in a while."
As far as walking the dogs, just listen a lot, talk a little. And try not to step in anything.
Although stepping in something makes laughter ... i hadn't seen my W and I laugh like that in some time, we just laughed and laughed
