Video: Donny Osmond Sheds Tears, Reflects on Sister Marie’s Resilience

Nearly three months since the tragic and shocking suicide of Marie Osmond's 18-year-old son Michael, a tearful Donny Osmond opens up to our own Mary Hart about Marie's courageous battle to heal amid her deep despair.

In his only interview about Marie's family tragedy, Donny reveals Marie's struggles to cope with her loss while continuing performances for their Las Vegas show.

"I can...hear her crying [in her dressing room], and that hurts," Donny says as he wells up with tears. "So I tell them, 'Delay the show until she stops crying.' And what's amazing is that just minutes after she's cried, she'll come out of the dressing room perfect, ready to go. How does she do it? I don't know."