“Through Peace & Mind, we want to improve lives by empowering people, giving them the tools they need to build mental resilience, empathy, and self-compassion through mindfulness.
“In developing these skills, I hope that we can create a more understanding, peaceful, and stronger society for everyone.”
Scarlett Jenkinson and Eddie Ratcliffe, both 16, were given life sentences for murdering Brianna, also 16, in a park near her home.
Mr Sunak has accused Mr Starmer of “using the tragedy” and demonstrating the “worst of politics” in the House of Commons row.
He said his words at Prime Minister’s Questions had been “absolutely legitimate” and that he had “nothing but the most heartfelt sympathy for [Brianna Ghey’s] entire family and friends”.
Ms Ghey had been in Parliament on Wednesday alongside Emma Mills, the head teacher at Brianna’s school, to attend a debate on whether to introduce mindfulness to the national curriculum.
Ms Ghey has already raised thousands of pounds to deliver mindfulness training in schools in her local area, around Warrington.
Ms Mills, head teacher at Birchwood Community High School, told BBC Breakfast on Thursday they had not been present during Mr Sunak’s comments and had “not really discussed it” on the day.
She is backing the campaign by Brianna’s mum, saying mindfulness would be a “massive step forward” for education.
Mindfulness is a calming technique that involves examining the present moment without judgement, the charity Mind says.