Magda Szubanski's first memoir, Reckoning (2015), was structured around her father — a wartime figure whose shadow fell long and dark across her childhood. I Can't Tell You But I Will rotates the axis. Her mother Margaret, a flinty Scottish woman whose love expressed itself through a particular kind of meanness, gets the full forensic treatment here. It is not a softer book for being about a less historically dramatic subject. If anything it's harder, because the wounds are more intimate and the reckoning more unresolved. The book runs two narrative threads in parallel: Margaret's long decline and death, and Szubanski's reluctant emergence as the face of Australia's Yes campaign for marriage equality. What holds them together is ambivalence. She didn't want to be the voice of a movement. Her doubt and insecurity — documented here without false modesty — sit in fascinating tension with the public image of a beloved national figure armed with an Order of Australia and a butter knife, as she puts it. Her opponents wanted a culture war; she gave them warmth and dignity instead. Religion threads through both stories. Raised Catholic, she found genuine comfort in ritual while the doctrine worked against her at every turn. The moment she first had sex with a woman and recognized that it was not an unnatural act — whatever the Church had told her — is rendered without melodrama. The faith story and the sexuality story are the same story: about what authorities get to define as natural, and what happens when lived experience contradicts them flatly. The mother-daughter material is the emotional core, and it's where Szubanski's prose earns its keep. Margaret is not softened in death. The word 'mean' recurs with deliberate repetition — Szubanski wants you to feel each instance, not process them in aggregate. But she also refuses to reduce Margaret to her cruelties. The portrait that emerges is of a woman who loved imperfectly, fiercely, and without the vocabulary for what she felt. The daughter's act of writing her down is described as something between exorcism and ennoblement. The book has two real absences, which the Guardian review names honestly. The Indigenous Voice to Parliament vote — a referendum that followed the marriage equality fight and descended into something much uglier — gets a single mention despite occupying roughly analogous cultural terrain. And Szubanski's cancer diagnosis, announced last year, is barely present. The reviewer gives her the benefit of the doubt on both counts, and it's a fair reading: she may simply not have been ready. What the book does include is so precisely handled that the gaps read as principled restraint rather than evasion. What makes this an anti-celebrity memoir isn't what's left out of the famous-person ledger — it's what Szubanski puts in its place. The heroes here are named Clint and Narelle. The work that matters is done in women's refuges and Q&A studios and hospital rooms. 'Unhistoric acts' is the phrase she uses, borrowing Middlemarch's register without Eliot's ironic distance. She means it without sentimentality, which is harder than it sounds.