A British tabloid says she -- boiled over at the hotel where contestants stay from the show that made her famous, "Britain's Got Talent."
As CBS News correspondent Richard Roth put it, "Fame has a price," and Boyle is "learning that part of it's sometimes bad press."
Britain's best-selling Sun newspaper says Boyle lost her cool in an encounter in the hotel's lobby with a pair of strangers -- one that ended in a chat with police.
Details are thin, Roth says, except for the paper's claim that the encounter included Boyle swearing at the strangers.
But on The Early Show Thursday, one of Boyle's biggest backers, "BGT"Judge Piers Morgan, said he's "feeling more supportive" of Boyle "today than I was before, because I feel really sorry for Susan.
"From what I hear," he told co-anchor Maggie Rodriguez, "she's been in tears the last two days. She even threatened to leave the show yesterday at one stage, because of the sheer amount of pressure on her.
"And you have to remember with Susan, she's a 48-year-old lady from a tiny village in Scotland who has never been exposed to anything like this kind of attention. And I think she's really feeling the heat.
"The hotel she's in is crawling in tourists, crawling in the media. I think maybe she overreacted. I don't know what happened. She denies, apparently, some of the things that have been reported.
"But either way, I know she's feeling a lot of pressure, and I think that most people watching this show and hearing about this will feel natural sympathy toward her. And I just hope it all calms down for the final. Because, on Saturday, she sings for the competition" -- for all the marbles.
Morgan, a former tabloid editor, admits he'd be covering Boyle heavily, too, if he were still in his old job. "Susan is the hottest story in town," he observed. ... Every single thing that Susan has done in the last three or four weeks has been headline news in Britain, in America, in Russia, in China. She's a true global phenomenon. ... And she's beginning to realize that her life will never be the same.
"I feel very, very sorry for her," Morgan continued. "At the same time, I've tried to explain to her, 'Look, you know, this is still a wonderful opportunity for you. And most people out there still have great affection for you, and are really willing you to victory. So try to keep calm, don't read the newspapers, don't watch television, keep yourself very cool and composed, and just focus on the (Saturday's) performance."
Boyle, Piers adds, "is quite naturally feeling the pressure. ... She knows that, on her semifinal performance, when she sang, she . And now she knows that she's got this amazing career ahead of her, if she can nail that song on Saturday. And it's going to be a fantastically exciting moment, because this is it. This is the two minutes that will define Susan Boyle's life."