Catherine, Princess of Wales carried out a deeply personal engagement on Tuesday, visiting the London hospital where she underwent cancer treatment to express her gratitude to the staff who supported her over the past year.

Catherine, Princess of Wales, said on Tuesday that her cancer was in remission, lifting a major cloud from the British royal family, which had struggled with serious health concerns for both her and King Charles III. “It is a relief to now be in remission and I remain focused on recovery,” Catherine, the wife of Prince William, wrote on Instagram.

The Princess of Wales, who revealed in March that she had been diagnosed with cancer after speculation surrounding her whereabouts, said on Tuesday she is in remission.