Musical actor Jeong Sun-ah burst into tears as she was declared the best lead actor at the Korean Musical Awards on Jan. 15 for her performance in “If/then.” The award came after a turbulent two years for the actor, who recently became a mom, and harbored doubts over whether she could return to the stage. "Even as I get older, (and as I became a mom), I wanted to prove that with effort, it's pos...