My sister kept breaking into my apartment like she owned it, and the worst part wasn’t what she touched—it was how she laughed when I asked her to stop.

She lifted a shoulder in a little shrug. “Mom gave me the spare.”

Of course, she did.

I tried to keep my voice calm. “You can’t just come in whenever you want.”

She rolled her eyes and waved a hand at the room. “It’s not like I’m some random person. I’m your sister. Besides, you work too much. You’re always alone. It’s sad.”

She said it was sad—like she was diagnosing me, like being alone in my own home was a symptom.

And the thing is, a part of me still wanted to be the reasonable one, the mature one. I told myself she was just being Claire. I told myself I could fix it with a simple conversation.

So I called Mom that night.

“Mom,” I said, “I need you to take the spare key back from Claire. She can’t come into my apartment without asking.”

Mom sighed like I’d asked her to refinance a house. “Marin, honey, she’s family. She was probably just checking on you.”

Checking on me. I tasted the words like they were bitter. “She was using my things.”

Mom made that soft little sound she makes when she’s about to turn my feelings into something inconvenient. “You’ve always been sensitive. Claire is just trying to be close to you.”

I looked over at my coffee table. There was a smear of mascara on a napkin—black and careless. Claire hadn’t just been close to me. She’d been inside my space, inside my life, leaving fingerprints I couldn’t wash off.

Then Dad came on the line for a moment, because Mom always puts Dad on like it’s a way to seal the conversation. He didn’t say much. He never does.

“Marin,” he said, “just keep the peace. Your mom is right. Claire is family.”

Keep the peace.

It’s funny how that phrase always means the same thing. It means I should swallow my discomfort so no one else has to feel awkward.

After that, the visits stopped being casual. They turned into something else—something that felt like ownership.

One afternoon, I came home and my mail was stacked in a neat pile on my kitchen counter. Not how I leave it. I leave it in a messy fan because I’m always rushing. The top envelope—a bank letter—had been opened and carefully resealed. The edge was still rough where the glue didn’t fully catch. My stomach went cold the way it does when you realize a boundary has already been crossed and you’re only now finding the footprint.

I stood there staring at that envelope, trying to decide if I was overreacting the way everyone always told me I was. I told myself maybe I opened it and forgot. Maybe I was losing my mind.

Then I saw the second envelope: a medical bill, also opened. The third—junk mail—untouched.

Claire had picked and chosen. She had read what mattered.

Another day, it was my dresser drawers. I know my drawers. I know the way my sweaters sit folded in soft stacks, and the way my sock drawer is crammed with mismatched pairs because I never have the patience to sort them. I came home and found my lingerie drawer pushed slightly too far in. One corner of a bra strap was caught in the gap like it was trying to wave for help.

Nothing was missing. That almost made it worse.

It meant she wasn’t stealing. She was searching. She was reminding me she could.

Then it was the kitchen. Spices rearranged. My olive oil moved from the back to the front. My favorite mug—the one with the chipped rim that I keep because it makes tea taste like comfort—sitting in the sink with lipstick on the edge.

Claire doesn’t drink tea. Claire drinks iced coffee and calls it a personality.

Every time, I’d feel the same slow rise of panic. Not loud panic—careful panic, the kind that sits in your chest and makes you walk through your own home like you’re intruding on someone else.

I started testing myself like a person who can’t trust her own memory. I would leave a pen on my desk at a certain angle. I would place a hair tie on the bathroom counter. I would tuck a receipt into a cookbook. And then I would come home and find the pen moved, the hair tie gone, the receipt sitting on top of the cookbook—like someone had wanted me to notice.

It wasn’t just that Claire was coming in. It was that she wanted me to know she had been there.

The worst part was how easy she made it sound when I confronted her.