The next morning, I’m up before eight, but my parents are already gone. One of them must have tiptoed in, because there’s a card propped against the lamp on my bedside table. I pick it up, wondering which of them chose the card. It will be clear immediately: if it was Mom, it will be flowers or butterflies or birds, with sweet words. If it was Dad, it will be a Far Side card or something gross or based on a bad pun.

I sit up and slide the card from the envelope. Mom. It’s dragonflies and flowers, and it says, Wishing you a birthday as bright as your smile. My dad has added his personal touch, though. He has drawn an arrow to “smile” and made an orthodontia joke: $7,200 worth of bright, not that anyone’s counting.

On the inside, my mother has written, I can’t believe it’s been eighteen years. What a joy you have been. I love you with my whole heart. Mom.

And my dad added, Slow it down, sunshine — the years have gone too fast. Love you lots, Dad.

A lump forms in my throat, especially as I consider my morning plans. I remind myself that this isn’t betrayal or ingratitude. It’s just information. Well, potential information — there’s no guarantee it will even lead anywhere.

I’m just packing up the completed test kit when the doorbell rings at the stroke of ten. When I open the door, Sam holds out a large cup from Coffeehole. “Caramel latte, m’lady,” she says. “Happy birthday.”

“Oh my god. You didn’t!” I pull back the door to let her in. “What a perfect start to my birthday.”

“Well, the BOY-FRND01 was on the fritz, so I had to get it myself.”

I take the cup and give her a quick hug. “You’re way better than any boybot. Come on in. Let me just grab my stuff.” I head up the stairs and she follows me. “How are things with your mom?” I ask.

She comes into my room, sets down her messenger bag, and sits on my bed. “Not terrible,” she says. “She didn’t object to me taking the car this morning.”

“That’s great! Sounds promising.” I sit at my desk and sip the latte. “Mmmm, so good! Want a sip?”

She shakes her head. “That’s okay.”

A message dings on my phone. I turn around, looking for it. Sam finds it on my bed and hands it to me. It’s from my mom.

Are you up? All is well! Arriving back earlier than expected. Dad and I couldn’t sleep, so we got up and headed out early. We should be home in less than an hour.