Johnson has long been an advocate for mental health awareness and was honoured at the 2023 Hope for Depression Research Foundation annual luncheon on 14 Nov. During a speech, she gave a rare insight into how Martin helps her during difficult days, with humour and consideration. "A few weeks ago, I was having a low day and my partner said to me, 'Are you really struggling?' and I said 'No?'," she told the guests. "And he said, 'Baby, you are wearing a Cats T-shirt.' As in Cats the music. So it turns out, I really was struggling. But that moment lifted me up and pulled me out of it."