Reality TV
WENN.com
The singer, who finished second in this year's competition, had been a doubt for today's London show after pulling out of previous dates on the UK tour.
Speaking to The Mirror, a spokesperson for the star said: "Susan's still very tired, but she is really excited about the show and can't wait to get back on stage.
"If she were told she couldn't perform it would break her heart."
Boyle recently completed a stint in the Priory clinic after complaining of physical and mental exhaustion following her experience on the ITV1 show.
It had previously been suggested that the 48-year-old would only perform at a select number of shows on the tour in order to conserve her energy for recording her debut LP.
> Cowell: 'Boyle could not cope with losing'
Related Stories
Tube Talk
'Thunderbirds': Tube Talk GoldDigital Spy looks back at Gerry Anderson's enthralling '60s series.
TV Interviews
Apprentice Gabrielle 'was easy target'Digital Spy talks to Gabrielle Omar about being too nice for the show.
TV Ratings
'Lip Service' ends series with 240,000Lip Service has performed poorly in the Friday 9pm slot for BBC Three.
TV Recaps
'Homeland' finale: Have your sayHomeland's incredible finale is reviewed by Digital Spy. Share your verdict.
