We've just started letting Daisy off the lead, and she's normally such a good girl, normally only ventures about 10 feet away from me. But over the like, past day or two, we get avout 3/4 of the way through the walk and she just runs off? She runs straight back home, the walks arent long, only about 15 minutes, but still, she runs and I'm nervous that she may get off track. Would it be best to get her back on a lead? Or when she runs, I read somewhere that I should run in the opposite direction? Whats the best thing to do?