The evening walk was going Ok, but this time Penny saw another pair of dogs in the beginning and was on high adrenaline for the remaining of the walk. So she would pull a lot, and showed some strength. The encounter with the other dogs was not aggressive: they actually did not really meet close, but it looked like Penny was in the "play" mode since then. So we should bring her in touch with other dogs to get the excitement lower in the long run. We also had some gameplay in the house: she was going after the green squeeky ball like 10 times. Bringing it back to us was not yet possible, but there was excitement about the ball and interest. It's a good path.