Wait there was a choice regarding Gamora in chapter 8?

[Juanma]

I just started Chapter 9, I'm literally paused at the cutscene where everyone comes back to the Milano after almost dying in the vacuum of space and suddenly Gamora arrives with the arms of Raker, and the sign "Gamora appreciated your trust in going alone to kill Raker" and I'm sitting here utterly confused, because I disctinctively remember her splitting from the group at once point, going up a few platforms I couldn't get over; no dialogue options, no chance to give chase, but the game is treating it as a choice. What did I miss?

[Sunsetter]

Pasted from google:
It's not an obvious choice by any means, but while you're fighting your way out of the Sacrosanct Gamora will suddenly break off from the group to pursue Raker in full assassin mode. She runs up an elevated path, and if you physically follow her, you can actually stop this from happening.

Trust Gamora: Gamora won't be a part of your team for the rest of the Sacrosanct breakout, essentially forcing you to play with one less ally. It's harder to do, but by no means impossible. Later on, Gamora will return having wounded Raker, which will make a later boss fight against him easier.
Stop Gamora: Gamora is forced to avert her assassination plan when Peter immediately falls off a walkway and she has to catch him, giving Raker a chance to escape. She's outraged, but will be there for the rest of the battle out of Sacrosanct.

[Juanma]

Originally posted by Samael:

Pasted from google:
It's not an obvious choice by any means, but while you're fighting your way out of the Sacrosanct Gamora will suddenly break off from the group to pursue Raker in full assassin mode. She runs up an elevated path, and if you physically follow her, you can actually stop this from happening.

Trust Gamora: Gamora won't be a part of your team for the rest of the Sacrosanct breakout, essentially forcing you to play with one less ally. It's harder to do, but by no means impossible. Later on, Gamora will return having wounded Raker, which will make a later boss fight against him easier.
Stop Gamora: Gamora is forced to avert her assassination plan when Peter immediately falls off a walkway and she has to catch him, giving Raker a chance to escape. She's outraged, but will be there for the rest of the battle out of Sacrosanct.

Huh I didn't think there was a path up. Guess I was wrong.
Also I was googling for a while and found nothing this concise.