Just to clarify:
You lift, do body-weight work, and sprint 3-4 times a week.
Then 5 days a week, you get lots of walking done at work (5-10 miles)
And you run around after your daughter
Correct me if that's wrong. Workout related advice: You get plenty of cardio, so lets up the lifting. Try lifting/doing body-weight work 3 times a week for sure. If you want to workout more than that add in HIIT/Sprinting. If you're walking 5 miles a day thats plenty of low-intensity work.
What's the diet like? Sounds like you're working your ass off for lack of a better word... Are you sleeping/recovering as much as you're working? That means diet, sleep, and stress management.
Health is synergy; remember that.