On Sunday, Queen Elizabeth attended a private ceremony to mark the christenings of two of her great-grandchildren, according to the British news agency PA, four days after making her first public appearance following a hospital stint.

Buckingham Palace has not respond to the report.

The queen spent the first night in hospital in years last month for what the palace described as “preliminary investigations” into an unidentified ailment, and physicians have recommended her to cancel most engagements since then.

She pulled out of a Remembrance Day Ceremony on Nov. 14 with a sprained back which a palace source said was unrelated to the condition which has required rest and was an unfortunate coincidence.

On Nov. 17, she was pictured standing and smiling at her Windsor Castle home as she chatted to the chief of defense staff.

Sunday’s private ceremony, which took place at the Royal Lodge in Windsor Great Park, was to celebrate two family christenings, according to the PA report.

One was of the baby son of Princess Eugenie, daughter of the queen’s third child Prince Andrew. The other was of the third child, a son, of Zara Tindall, daughter of the queen’s second child Princess Anne.