Several times , Dr. Austin orders Zach to avoid strenuous exercise as he accompanies Vicky and her family in their sightseeing .
Vicky 's father , Dr. Wallace Austin , deduces that Zachary has a history of rheumatic fever that damaged his heart .
Several times , Dr. Dr. orders Zach to avoid strenuous exercise as he accompanies Vicky and Vicky 's family in their sightseeing .
Vicky 's father , Dr. Wallace Austin , deduces that Zachary has a history of rheumatic fever that damaged his heart .