Kate described the cancer diagnosis and treatment as "life-changing" for both patients and their loved ones. "You have to find your new normal and that takes time … And it's a roller coaster. It's not smooth, like you expect it to be," she said, according to the outlet. "But the reality is you go through hard times."

Kate—dressed in a striped tan blazer, coordinating striped Ralph Lauren button-up and brown trousers with Veja sneakers—also got to work in the hospital's RHS Wellbeing Garden despite the rain, planting some very personal flowers in the process.