>> margaret: the love between a mother and daughter could never be measured, with perhaps one exception. cbs's steve hartman goes "on the road" to alabama. >> reporter: a lot of kids in america want to run a lemonade stand. but not many feel like they have to. 7-year-old emouree johnson started her business a few weeks ago, after a terrible nightmare morning. >> i woke up with the worst news of my life. >> reporter: emouree's mother, karli, died unexpectedly at the age of 29. she was a single mom, and emouree's everything. >> want to go see mommy? >> reporter: which was why she couldn't understand the first time she went to the cemetery with her grandmother, jennifer, why everyone else got giant granite headstones, but her mom just this tiny metal one. did it bother you?