Esther Ghey says it is "equally important" the PM hears from bereaved families as well as tech giants.
Cheshire's police and crime commissioner says he wants all secondaries to have lockable phone pouches.
Esther Ghey says she felt like she "failed" after struggling to restrict her daughter's phone use.
A local councillor says the community "came together to fight" against the plans.
Residents are concerned part of the shopping complex could be turned into residential accommodation.
Pupils at murdered teenager Brianna Ghey's former school are no longer allowed to use their phones.
Lynsay Walton had asked police to investigate Stuart Campbell's posts on X about Brianna Ghey's gender.
Brianna Ghey's mum says she wants to "get answers" from social media companies about safety.
Eddie Ratcliffe's lawyers argued the trial judge had not taken his "immaturity" into account.
