“Thank you,” I replied.

It was enough for that evening.

PART 22

In July, Selena attended the engineering camp.

She called every night for the first three days and then less often once she became absorbed in the workshops.

She described a laboratory where students tested materials, a professor who answered every question seriously, and a new friend who wanted to design medical devices.

“I didn’t know people could make careers out of these ideas,” she told me over the phone.