‘I don’t know,’ she said. ‘I’m sorry. I don’t know.’

It was true. She didn’t know. But she knew there had been plenty of time to put her foot on the brake to let Connor Whitby cross the road.

They told her that it was unlikely she would be charged. It seemed that a man in a taxi had seen the little girl ride her bike directly in front of the car. They asked her who they could call to come and collect her. They insisted on this, even though a second ambulance had been called just for her, and the paramedic had checked her over and said that there was no need for her to go to the hospital. Rachel gave the police Rob’s number, and he arrived far too quickly (he must have been speeding), with Lauren and Jacob in the car. Rob was white-faced. Jacob grinned and waved a chubby hand from the back seat. The paramedic told Rob and Lauren that Rachel was probably suffering from mild shock, and that she should rest and stay warm and not be left alone. She should see her GP as soon as possible for a check-up.

It was awful. Rob and Lauren dutifully followed orders, and Rachel couldn’t get rid of them, no matter how hard she tried. She couldn’t get her thoughts straight while they hovered about, bringing her cups of tea and cushions. Next thing that perky young Father Joe turned up, very upset about members of his flock running each other over. ‘Shouldn’t you be saying the Good Friday mass?’ said Rachel ungratefully. ‘All under control, Mrs Crowley,’ he said. Then he took her hand and said, ‘Now you know this was an accident, don’t you, Mrs Crowley? Accidents happen. Every day. You must not blame yourself.’

She thought, Oh, you sweet, innocent young man, you know nothing about blame. You have no idea of what your parishioners are capable. Do you think any of us really confess our real sins to you? Our terrible sins?

At least he was useful for information. He promised that he would keep her constantly informed about Polly’s progress, and he was as good as his word.

She’s still alive, Rachel kept telling herself as each update came. I didn’t kill her. This is not irretrievable.

Lauren and Rob finally took Jacob home after dinner and Rachel spent the night replaying those few moments over and over.

The fish-shaped kite. Connor Whitby stepping out on to the road, ignoring her. Her foot on the accelerator. Polly’s pink sparkly helmet. Brake. Brake. Brake.

Connor was fine. Not a scratch on him.

Father Joe had called this morning to say that there was no further news, except that Polly was in Intensive Care at Westmead Children’s Hospital and receiving the very best of care.

Rachel had thanked him, put down the phone and then immediately picked it up again to call a cab to take her to the hospital.

She had no idea if she would be able to see either of Polly’s parents or if they would want to see her – they probably wouldn’t – but she felt that she had to be here. She couldn’t just sit comfortably at home, as if life went on regardless.

The double doors leading into Intensive Care flew open and Cecilia Fitzpatrick barrelled through, as if she was a surgeon off to save a life. She walked rapidly down the passageway, past Rachel, then stopped and gazed about her, baffled and blinking, like a sleepwalker waking up.

Rachel stood.

‘Cecilia?’

An elderly white-haired woman materialised in front of Cecilia. She seemed wobbly, and Cecilia instinctively put out her hand towards her elbow.

‘Hello, Rachel,’ she said, suddenly recognising her, and for a moment she saw only Rachel Crowley, the kindly but distant and always efficient school secretary. Then a giant chunk of her memory crashed back into place: John-Paul, Janie, the rosary beads. She hadn’t thought about any of it since the accident.

‘I know I’m the last person you want to see right now,’ said Rachel. ‘But I had to come.’

Cecilia remembered dully that Rachel Crowley had been driving the car that hit Polly. She’d registered it at the time, but it had had no particular relevance to her. The little blue car had been like a force of nature: a tsunami, an avalanche. It was as if it had been driven by no one.

‘I’m so sorry,’ said Rachel. ‘So terribly, dreadfully sorry.’

Cecilia couldn’t quite comprehend what she meant. She was too sluggish with exhaustion and the shock of what Dr Yue had just said. Her normally reliable brain cells lumbered about, and it was with the greatest of difficulty that she corralled them into one place.

‘It was an accident,’ she said, with the relief of someone remembering the perfect phrase in a foreign language.

‘Yes,’ said Rachel. ‘But –’

‘Polly was chasing Mr Whitby,’ said Cecilia. The words flowed easier now. ‘She didn’t look.’ She closed her eyes briefly and saw Polly disappear beneath the car. She opened them again. Another perfect phrase came to her. ‘You must not blame yourself.’

Rachel shook her head impatiently and batted at the air as if an insect was bugging her. She grabbed hold of Cecilia’s forearm and held it tight. ‘Please just tell me. How is she? How serious are her – her injuries?’

Cecilia stared at Rachel’s wrinkled, knuckly hand clutching her forearm. She saw Polly’s beautiful healthy skinny little girl arm and found herself coming up against a spongy wall of resistance. It was unacceptable. It simply could not happen. Why not Cecilia’s arm? Her ordinary, unappealing arm with its faded freckles and sunspots. They could take that if the bastards had to have an arm.

‘They said she has to lose her arm,’ she whispered.