Our Daughter Had a Twin Sister We Never Told Her About—On Her 18th Birthday, My Husband Brought Out a Chest He’d Been Building for 18 Years

“What?”

Arthur laughed.

It was ridiculous.

Also something siblings might joke about.

Even absent ones.

PART 45 — THE FAMILY TREE

At twenty, Chloe worked on a family-history project.

For the first time, she added:

Elena May Mason — twin sister

Not parenthetical.