Media reports this week suggested the beloved 48-year-old Scottish underdog is cracking under the pressure of her newfound fame.
But the show's Web site said Boyle continues to rehearse and is expected to compete in Saturday's finale.
"Susan Boyle is still very much part of the 'Britain's Got Talent.' She is looking forward to the Grand Final and she is rehearsing hard to prepare for the biggest night of her life," a show representative said in a statement. "She, like all of our contestants, is being closely looked after by program makers. Susan's personal welfare is very important to us, and we will continue to do everything we can to make sure she remains happy and well."
The representative also said reports claiming Boyle has gotten angry, burst into tears or threatened to quit the show were taken out of context and exaggerated.
"I want nothing more than to stay and sing in the 'Britain's Got Talent' final," Boyle added. "I've spent weeks rehearsing -- it's all I've been thinking about. I'm not going to throw away my big chance now."