Time travel works like this:

Arianna has been traveling through time her entire life. Through every single life she's had.

Arianna was born on January 1st, year 1, and her first-born daughter has always been her: a perfect duplicate, retaining all of her mother's memories. And so, the collective memories of 100 Ariannas–100 lifetimes, course through the synapses of the latest Arianna, who has just moved out of her parent's house into her own life.

But this latest Arianna finds that she can do mor