Molly wanted to go to the park ‘like normal’ to feed the ducks, and so Nora took her, disguising the fact that she was using Google Maps to navigate her way there.

Nora pushed her on a swing till her arms ached, slid down slides with her and crawled behind her through large metallic tunnels. They then threw dry oats into the pond for the ducks, scooped from a box of porridge.

Then she sat down with Molly in front of the telly and then she fed her her dinner and read a bedtime story, all before Ash returned home.

After Ash came home, a man came to the door and tried to get in and Nora shut the door in his face.

‘Nora?’

‘Yes.’

‘Why were you so weird to Adam?’

‘What?’

‘I think he was a little bit put out.’

‘What do you mean?’

‘You acted like he was a stranger.’

‘Oh.’ Nora smiled. ‘Sorry.’

‘He’s been our neighbour for three years. We went camping with him and Hannah in the Lake District.’

‘Yes. I know. Of course.’

‘You looked like you weren’t letting him in. Like he was an intruder or something.’

‘Did I?’

‘You shut the door in his face.’

‘I shut the door. It wasn’t in his face. I mean, yes, his face was there. Technically. But I just didn’t want him to think he could barge in.’

‘He was bringing the hose back.’

‘Oh, right. Well, we don’t need the hose. Hoses are bad for the planet.’

‘Are you okay?’

‘Why wouldn’t I be?’

‘I just worry about you . . .’

Generally, though, things turned out pretty good, and every time she wondered if she would wake up back in the library, she didn’t. One day, after her yoga class, Nora sat on a bench by the River Cam and re-read some Thoreau. The day after, she watched Ryan Bailey on daytime TV being interviewed on the set of Last Chance Saloon 2, in which he said he was ‘on a spiritual quest for a deeper connection with the universe’ rather than worrying about ‘settling down in a romantic context’.

She received whale photos from Izzy, and WhatsApped her to say that she had heard about a horrid car crash in Australia recently, and made Izzy promise she would always drive safely.

Nora was comforted to know she had no inclination whatsoever to see what Dan was doing with his life. Instead, she felt very grateful to be with Ash. Or rather, and more precisely: she imagined she was grateful, because he was lovely, and there were so many moments of joy and laughter and love.

Ash did long shifts but was easy to be around when he was in, even after days of blood and stress and gall bladders. He was also a bit of a nerd. He always said ‘good morning’ to elderly people in the street when walking the dog and sometimes they ignored him. He sang along to the car radio. He generally didn’t seem to need sleep. And was always fine doing the Molly night shift even when he was in surgery the next day.

He loved to gross Molly out with facts – a stomach gets a new lining every four days! Ear wax is a type of sweat! You have creatures called mites living in your eyelashes! – and loved to be inappropriate. He (at the duck pond, the first Saturday, within Molly’s earshot) enthusiastically told a random stranger that male ducks have penises shaped like corkscrews.

On nights when he was home early enough to cook, he made a great lentil dal and a pretty good penne arrabbiata, and tended to put a whole bulb of garlic in every meal he created. But Molly had been absolutely right: his artistic talents didn’t extend to musical ability. In fact, when he sang ‘The Sound of Silence’, accompanied by his guitar, she found herself guiltily wishing he would take the title literally.

He was, in other words, a bit of a dork – a dork who saved lives on a daily basis, but still a dork. Which was good. Nora liked dorks, and she felt one herself, and it helped make her get over the fundamental peculiarity of being with a husband you were only just getting to know.

This is a good life, Nora would think to herself, over and over again.

Yes, being a parent was exhausting, but Molly was easy to love, at least in daylight hours. In fact, Nora often preferred it when Molly was home from school because it added a bit of challenge to what was otherwise a rather frictionless existence. No relationship stress, no work stress, no money stress.

It was a lot to be grateful for.

There were inevitably shaky moments. She felt the familiar feeling of being in a play for which she didn’t know the lines.

‘Is anything wrong?’ she asked Ash one night.

‘It’s just . . .’ He looked at her with his kind smile and intense, scrutinising eyes. ‘I don’t know. You forgot our anniversary was coming up. You think you haven’t seen films you’ve seen. And vice versa. You forgot you had a bike. You forget where the plates are. You’ve been wearing my slippers. You get into my side of the bed.’

‘Jeez, Ash,’ she said, a little bit too tense. ‘It’s like being interrogated by the three bears.’

‘I just worry . . .’

‘I’m fine. Just, you know, lost in research world. Lost in the woods. Thoreau’s woods.’

And she felt in those moments that maybe she’d return to the Midnight Library. Sometimes she remembered the words of Mrs Elm on her first visit there. If you really want to live a life hard enough, you don’t have to worry . . . The moment you decide you want that life, really want it, then everything that exists in your head now, including this Midnight Library, will eventually be a dream. A memory so vague and intangible it will hardly be there at all.