Read the excerpt from dwight okita’s "in response to executive order 9066". i didn’t know what to say. i gave her a packet of tomato seeds and asked her to plant them for me, told her when the first tomato ripened she’d miss me. the narrator assumes that she will

The narrator assumes that she will be gone for a long time.

Explanation:

The narrator hands tomato seeds to a girl and asks her to plant the tomatoes. Then the narrator says that when the first tomato fruit ripens the girl will miss her. From this we can conclude that the narrator assumes that she will be away for a long time.

This is because the narrator will go away, the tomato will grow, bloom, bear fruit and until the first tomato fruit ripens, the narrator will not be back yet.