A surgeon told ITV News Granada that Gaby Scanlon has undergone a "very big operation" but she should still be able to live a "relatively normal life".
The 18-year-old, who had her stomach removed after drinking a cocktail containing liquid nitrogen, will need to eat smaller meals more frequently and possibly take nutritional supplements, the surgeon said.
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Accompanied by the Duke of Edinburgh, the Queen will attend the opening ceremony of the fifth session in the Holyrood chamber.
Ms Leadsom has received the backing of Ian Duncan Smith, the former work and pensions secretary.
The former shadow work and pensions secretary is considered a more viable candidate than Angela Eagle, a Labour source has told ITV News.