Britain's Duchess of Cambridge radiated a similar "aura" to the late Princess Diana during her visit to the Family School.
Duchess Catherine
The 33-year-old royal played games, chatted with children and tested out a new brain-training system during her visit to the new facility run by the Anna Freud Centre, which tackles mental health disorders, on Thursday (17.09.15) in London.
Catherine particularly impressed Chantel as she watched her son Kai, who has ADHD and an emotional disorder, go head-to-head with the Duchess on the FitLights.
Speaking to PEOPLE.com, Chantel said the mother-of-two, who has just returned from maternity leave, reminded her of her late mother-in-law Diana, who passed away in 1997.
She said: "She's a fantastic woman. Her aura reminds me of Princess Diana very much, which is a very warm feeling."
The Duchess spent an hour at the facility, which teaches 26 children from the age of five to 15, who suffer with serious emotional and behavioural issues.
The school allows parents to sit in on lessons with their children in both academic subjects and therapeutic classes.
Catherine's visit to the school comes just a few weeks after she and her husband Prince William, who got married in 2011, released a statement saying how they intend to "play a part" in the improvement of mental health services and to address the issues in order to "benefit young people".
This was also her first official royal engagement since the birth of her second child Princess Charlotte in May.