And out of nowhere I feel it beginning. It’s a heat in my head, and my ears are thrumming with red noise. I can feel my chest rising and falling rapidly and it’s weird, because there’s a split second where I could probably just stop this, just walk out and not let the meltdown happen. But then it’s too late and like a wave it hits and my temper rises and I turn round. ‘Have you got something you want to say?’ I look at her. ‘Grace.’ Mum’s tone is warning. ‘You sound like you need some quiet.’ Oh now she gets it. Well, it’s too late.