'Restless' Heart

''I'm sitting here getting my makeup and hair done,'' says Tonya Lee Williams, who plays Dr. Olivia Barber Hastings on The Young and the Restless, ''and just 48 hours ago, I was looking for water, hoping not to get shot. It's culture shock.'' Williams and a delegation of soap stars have recently returned from a six-day sojourn to war-torn Rwanda, where she visited camps, gave out food and water, and comforted children, as part of a World Vision-sponsored relief campaign. A travel-weary but enthusiastic Williams — who endured nine inoculations before going — at first considered the trip ''just a way to counter the very unreal world of Hollywood. I went for some balance in my life — and to help them. It was so empowering to believe, yes, one person can make a difference.''