On 19 March 2012, the Duchess gave her first speaking engagement for the opening of the Treehouse, a new children's hospice opened by East Anglia's Children's Hospices (EACH), a charity of which she is a patron.
With her improved ranking, Kenin was able to play primarily on the WTA Tour in 2018. She began the year by reaching her first WTA quarterfinal at the Auckland Open. After losing her first-round match at the Australian Open, Kenin produced good results at both Premier Mandatory events in March. She entered the top 100 by reaching the second round of the Indian Wells Open as a qualifier. She then qualified for and reached the third round of the Miami Open, where she upset No. 11 Daria Kasatkina.