This LeadingLady Is 16URSULA ST. GEORGE.Ursula St. George Is only 16.If you cross your fingers when the press agent tells you this, go see her. That's what the Times man did.Ursula St. George IS 16, Is hisreport. Her face is 16, her thinking is the thinking of sweet sixteen. Ursula St. George almost believes in fairies yet. Maybe that’s why she is making such a hit in “Rebecca of SunnybrookFarm/' which she opens *n tonight at the Tacoma.“My father, a literary man, raised nie on fairy stories,” she said. “I lived with fairy queens and ogres and hobgoblins. Father said it was better for me than history and arithmetic.”Her stage education was “Peter Pan” and “Blue Bird’ and “Little Eva” and “Uncle Tom.” She still lists them as her favorites.Being a fairy-girl, Ursula doesnt ever worry about salaries and routes and things, or have any stage tantrums. It’s a lovely beautiful world to Ursula yet.“It makes me wish I was 16 again,” grumbled the Times man. “It must be great to believe In things, like she does.”