My sister April had always been the person I called when everything went wrong.

When my marriage ended four years earlier, she was the one who showed up with cardboard boxes and helped me pack while my daughter cried in her bedroom. When my beat-up sedan blew its alternator, April drove me to work for three straight days without complaint. And when I finally landed a steady job as a patient care technician at a hospital outside Pittsburgh, she offered to watch Nell during my evening shifts.

"I’ve already got three kids running around," she told me with a breezy wave of her hand. "What’s one more?"

I didn't take her up on the offer for free. Every month on the first, I transferred $350 into her checking account. Sometimes I bought groceries for her household too—bulk packages of chicken breasts, gallons of milk, and giant boxes of fruit snacks. It wasn’t enough to pay a professional sitter for the thirty-odd hours a week I worked, and we both knew it. But April always waved away my apologies.

"That’s what sisters are for, Jasmine."

I believed her.

April was forty, four years older than me, raising three children of her own: Abby was eight, Henry was six, and Max had just turned three. Her divorce had been messy and bitter. Her ex-husband, Colin, took the children on alternating weekends, but the day-to-day grind fell squarely on April's shoulders. She did occasional catering jobs, sold vintage clothes online, and scraped by. Money was tight for both of us.

I worked from three in the afternoon until eleven-thirty at night, usually three or four days a week. April picked Nell up after school, and I collected her on my way home. By the time we got back to our duplex, it was often past midnight. Nell would crawl into bed half-asleep, and I’d set my alarm for six-thirty to make breakfast before the school bus came.

It was exhausting, but it was working. Or so I told myself.

The first person who noticed something was wrong wasn’t me. It was Patricia Miller.

Patricia was sixty-eight, a retired elementary school teacher who lived three houses down from us. She was a warm, observant woman who kept petunias on her porch and always had a kind word. The first summer we moved in, Nell helped Patricia carry two heavy bags of potting soil from her trunk. Patricia thanked her with a plate of warm fudge brownies, and after that, an easy friendship formed.

One Thursday afternoon, Patricia knocked on my front door just as I was tying my running shoes for work.

"I hope this isn’t an intrusion," Patricia said, smiling gently. "I take my grandson, Gabe, to the public library every Thursday evening. Nell mentioned she’s been wanting to read more mystery novels. Would she like to come along tonight? I could pick her up from your sister's around five-thirty and drop her back off by eight-thirty."

Before I could answer, Nell appeared behind me, her brown eyes wide. "Mom, please? Can I?"

I hadn’t heard that much life in Nell’s voice in months. Lately, she had seemed drained, her shoulders hunched under her backpack, quiet in a way that made my chest ache.

"Let me check with Aunt April first," I said.

When I called April, her tone was oddly flat. "Thursday? I thought she was staying here."

"It's just for three hours, April. Patricia will feed her and drop her back off."

A short pause buzzed over the line. "Fine. Just don't let her make a habit of running off."

That first Thursday, when I picked Nell up at midnight, she was still wide awake in the passenger seat, clutching a thick paperback and a brown paper bag with a leftover blueberry muffin. She talked the entire twenty-minute drive home—about the library’s spiral staircase, the book she chose, and how Patricia had bought them hot paninis and let her pick out dessert.

The following Thursday, Patricia invited her again. Then the Thursday after that. Nell began counting down the days until Thursdays. She started getting her homework done in advance, which was a huge relief; her math teacher had recently emailed me about missing worksheets, which I had chalked up to the noisy chaos at April’s house.

Then, on a rainy Tuesday evening, my phone buzzed on my hospital break. It was April.

"Can you come inside when you pick Nell up tonight?" April asked, her voice uncharacteristically tense. "There's something you need to see."

When I arrived at April’s house at midnight, the living room was dark, but the kitchen light was blazing. April didn’t offer me a cup of tea. She held up her smartphone, turning the screen toward me.

On the screen was a photo taken inside the library. Nell sat at a long wooden table next to young Gabe. A workbook lay open between them. Nell was pointing at a page with a pencil while Gabe stared at her attentively.

"What am I looking at?" I asked.

April folded her arms tightly over her chest. "That's what your sweet neighbor has your daughter doing every Thursday."

"Helping Gabe read?"

"Jasmine, wake up," April scoffed, her voice dropping to a conspiratorial whisper. "Patricia used to be a teacher. She knows private tutoring costs forty dollars an hour. She’s using your twelve-year-old daughter for free labor, having her teach that boy while she sits back and relaxes. And she buys Nell a five-dollar sandwich to keep her quiet. Nell feels indebted to her."

The words hit me like a splash of ice water. "Did Nell say that?"

"She doesn't have to," April said fiercely. "Nell is a people-pleaser. She’d scrub floors if someone told her it was polite. You work eighty hours a pay period to keep food on the table, Jasmine. You can't let some bored retiree take advantage of your kid."

I looked at the photograph again. Nell did look focused, serious, older than her twelve years. A knot of hot, defensive pride twisted in my stomach. April’s words echoed in my ears as I drove home in the rain.

I thought I was being a good mother. I thought I was protecting my daughter from being used.