direct to your inboxThe mum of Manchester Arena bombing victim Martyn Hett has opened up on the pain of dealing with Mother's Day - four years after she lost her son in the tragedy.Figen Murray said although she has a memory box full of cards Martyn sent over the years, it is a 'struggle' to look at them.Martyn, from Stockport, was among the 22 lives lost when Salman Abedi detonated his suicide bomb in the foyer of the Arena in 2017.He was 29.Figen has since campaigned tirelessly for a new law