Kate Middleton reveals cancer treatment in a heartfelt message. The princess, supported by husband Prince William, faces the illness with bravery. King Charles and Queen Camilla were aware of her condition, with Charles balancing treatment and public duties.Kate Middleton reveals cancer treatment in a heartfelt message. The princess, supported by husband Prince William, faces the illness with bravery. King Charles and Queen Camilla were aware of her condition, with Charles balancing treatment and public duties.