The 95-year-old British monarch has canceled several recent public appearances on her doctors’ advice.
The former British colony is set to become a republic on Nov. 30, the 55th anniversary of its independence from Britain.
Queen Elizabeth was set to make her first public appearance in weeks on Sunday, but had to cancel due to a sprained back.
The 95-year-old monarch looked well as she chatted with Gen. Nick Carter in Windsor Castle’s Oak Room.
The 95-year-old was originally due to make the speech in person, but the engagement was cancelled after her hospitalization.
Doctors have said she can "undertake light, desk-based duties during this time," according to the palace.
The 95-year-old monarch announced Tuesday that she has “regretfully” decided that she will no longer travel to Glasgow.
The queen made her first scheduled appearance since last week's overnight hospital stay.
The Queen's hospital admittance is understood not to have been related to coronavirus.
The Queen, 95, has "reluctantly" canceled a trip to Northern Ireland but is in "good spirits," said Buckingham Palace.