Lib agreed to mutton, not having a choice. Then she put her head down over Adam Bede immediately so William Byrne wouldn’t feel invited to linger.

When she reached the cabin at nine that night she recognized the moaning chorus of the Rosary: Holy Mary, Mother of God, pray for us now and at the hour of our death, amen.

She let herself in and waited on one of the three-legged stools the Irish called creepies. Like babies, the Catholics, babbling as they squeezed their beads. Sister Michael’s head was up, at least, eyes on the little girl, but was she concentrating on her or on the prayers?

Anna was in her nightdress already. Lib watched her lips shaping the words over and over: Now and at the hour of our death, amen. She trained her gaze in turn on the mother, the father, the poor cousin, wondering which of them was plotting to evade her scrutiny tonight.

“Sister, you’ll stay for a cup of tea with us?” asked Rosaleen O’Donnell afterwards.

“I won’t, Mrs. O’Donnell, but thank you kindly.”

Anna’s mother was flaunting her preference for the nun, Lib decided. Of course they’d like Sister Michael, familiar and inoffensive.

Rosaleen O’Donnell was using a little rake to tidy the embers into a circle. She set down three fresh sods like spokes in a wheel and sat back on her heels, crossing herself. Once the fresh turf flared up, she scooped ash from a bin and shook it over the flames, damping them down.

Lib had a dizzying sense that time could fall into itself like the embers. That in these dim huts nothing had changed since the age of the Druids and nothing ever would. What was that line in the hymn they’d sung at Lib’s school? The night is dark, and I am far from home.

While the nun was doing up her cloak in the bedroom, Lib asked her about the day.

Three spoonfuls of water taken, according to Sister Michael, and a short walk. No symptoms any better or worse.

“And if you’d seen the girl engage in any surreptitious behaviour,” asked Lib in a whisper, “I hope you’d consider this a relevant fact and mention it to me?”

The nun nodded guardedly.

It was maddening; what could they be missing? Still, the girl couldn’t hold out much longer. Lib would catch her out tonight, she was almost sure of it.

She chanced saying one more thing. “Here’s a fact. Manna from heaven,” she murmured in Sister Michael’s ear, “that’s what I heard Anna tell a visitor this morning, that she’s living on manna from heaven.”

The nun gave another tiny nod. Merely acknowledging what Lib had said, or affirming that such a thing was quite possible?

“I thought you might know the scriptural reference.”

Sister Michael furrowed her forehead. “The Book of Exodus, I believe.”

“Thank you.” Lib tried to think of some more conversational note to end on. “It’s always intrigued me,” she said, letting her voice rise, “why you Sisters of Mercy are called walking nuns.”

“We walk out into the world, you see, Mrs. Wright. We take the usual vows of any order—poverty, chastity, obedience—but also a fourth, service.”

Lib had never heard the nun say so much before. “What kind of service?”

Anna broke in: “To the sick, the poor, and the ignorant.”

“Well remembered, child,” said the nun. “We vow to be of use.”

As Sister Michael left the room, Rosaleen O’Donnell came in but didn’t say a word. Was she refusing to speak to the Englishwoman now, after this morning’s spat about the visitors? She turned her back on Lib, bending to wrap the tiny girl in her arms. Lib listened to the whispered endearments and watched Anna’s thick hands, dangling at her sides, empty.

Then the woman straightened up and said, “Let you sleep well tonight, pet, and may only the sweetest of dreams come to your bed. Angel of God, my guardian dear, to whom God’s love commits me here.” Dipping again, her forehead almost touching the child’s. “Ever this night be at my side, to light and guard, to rule and guide.”

“Amen.” The girl joined in on the last word. “Good night, Mammy.”

“Good night, pet.”

“Good night, Mrs. O’Donnell,” Lib put in, conspicuously civil.

After a few minutes, the slavey came in with an unshaded lamp and set it down. She struck a match and lit the wick till it flared, then crossed herself. “There you go, ma’am.”

“That’s a great help, Kitty,” said Lib. The lamp was an old-fashioned thing with a burner like a forked stick inside a conical glass chimney, but its light was snowy white. She sniffed. “Not whale oil?”

“’Tis burning fluid.”

“What’s that?”

“I couldn’t tell you.”

This mysterious burning fluid smelled something like turpentine; alcohol in the mix, perhaps.

We must be scavengers in a time of calamity; that line of Miss N.’s came back to Lib now. At Scutari the nurses had had to root through storerooms for chloride of lime, tincture of opium, blankets, socks, firewood, flour, lice combs… What they couldn’t find—or couldn’t persuade the purveyor to release—they had to improvise. Torn-up sheets became slings, sacks were stuffed to make tiny mattresses; desperation was the mother of the makeshift.

“Here’s the can, and the lamp scissors,” said Kitty. “After six hours you snuff it and trim off the charred bit and top it up and light the yoke again. And watch out for draughts, the fellow said, or they can shoot soot through the room like a black rain!”