She thinks Alex is abandoning us.
The Anasazi, "The Ancient Ones," as the present day Navajo call them, built cities and a society for 13 centuries before abandoning this high Sonoran desert, all before Columbus ever set sail.
He wasn't abandoning her; he was offering help.
In this battle Colonel Roosevelt became the ranking officer and, abandoning his horse, led the charge up the hill on foot under severe fire at the head of his troops.
Natasha guessed what he meant to do, and abandoning herself to him followed his lead hardly knowing how.