My own worry is that she is going to crack when she's on her own at Kensington Palace," says a reporter who knows her well. "One of her friends tells me, 'We are extremely worried about her mental state. She's entering a very difficult period now' " (Even Blooms-bury, it seems, was prepared for the worst; some of those involved with Princess in Love were counseled on how to conduct themselves should Di commit suicide.) For all that, the veteran Di watcher doesn't expect to see her break down in public. "She is a supreme actress and, as a friend of hers told me, 'She is going to hold her head up high,' " he says.