Another 2 miles, but a different route

My wife, while she was in Europe visiting our daughter, was in a bicycle accident and banged up her knee. Because of this, she hasn't walked for exercise since she came home. Today was the first time she went walking with me. She walked 0.6 miles around our neighborhood, and I continued for a total of 2 miles. I wore my Garmin GPS watch to check my mileage. Today was hot, in the mid 90s  (F), so we waited until early evening to go out when the temperature was down in the low 80s. I carried two cups of water and used all of it. I only had about four hours sleep last night plus a good nap, and I was pretty tired when I finished.