In Part 4 of Digimon Survive, youll be invited to Part 5. The early stages of this scene put you in a Free Action phase when you can speak to most of the group, including Aoi. This guide explains how to respond to Aoi when you see the prompt When I see her like this, so you don't get the wrong reaction.
When I see her like this in the cafeteria, what should I do?
When I see her like this, it's when you talk to Aoi in the cafeteria. The other two options give you new dialogue that you wont see with this one, but they don't increase your affinity with her.
Aoi is a powerful friend and character, so having a strong affinity with her will help you in battle when she talks to Digimon. This is especially helpful when you have to win boss battles. Occasionally, you may need to tweak your Aoi affinity to get the one you're after.