Wearing a T-shirt proclaiming, "I Left My Heart in San Francisco," a teen-ager whose classmate donated his heart to save her life was released from a hospital there. Donna Ashlock, 14, carried two teddy bears and a bouquet of party balloons as she left Pacific Presbyterian Medical Center in excellent condition, hospital spokeswoman Nancy Millhouse said. "She just wants to get back to Patterson, see her friends and get back to school," Millhouse said. The high school freshman should be back in school in six to eight weeks, she said. Donna's parents will take her home to the small farming community of Patterson, about 75 miles southeast of San Francisco. Donna's school friend, Felipe Garza, 15, died unexpectedly after a blood vessel burst in his head, and after telling his parents that he wanted his heart to go to Donna if he died.