Cuckoo - The new novel about family and motherhood from the author of The Panic Years

After Nancy's father dies, she is faced with two life-changing revelations. One: She has a half-brother she knew nothing about. Nancy's world is punched inside out at the discovery of a mysterious new sibling. But she can't help but feel curious about Oliver, this stranger who shares her DNA. Her sister Rita, on the other hand, is furious and wants nothing to do with their 'cuckoo' brother. Two: She's pregnant.
The father - Nancy's not-quite-boyfriend from her not-quite-relationship - doesn't want to commit any time soon. He isn't even in the same continent as her right now. And with her mother and sister in shock about Oliver, Nancy's struggling to find someone to turn to for support. In a tumult of grief, fear and hope, Nancy pushes herself into an uncertain future as she rethinks what really makes a family.
But there's one more thought in the back of her head.Is there space in her family for two more?