When you think about it, it's really lucky Touji's party caught the King Slime in the sewer. If they had met it in the open, that would give the King Slime more room to move. They would have been crushed into bloody paste like those orcs.
So....he's gottta report this to the guild right? Maybe he can...shift the credit over to her if he wants to stay off the radar? But King Kamon wants more battle, so...hmm.
@Roadrunner9000
Keep in mind that the morals in this world aren't like ours. The strong take down the weak and there's no court or law-enforcement to protect the weak. Ignis or Igneal in the LN decided to take a more practical approach and just take what she can get. It's tough to survive in this world.
The LN is free for the first two volumes, at least until 1/31/2021. I read them and got a little more background.
Ignis was a former C-class adventurer, but due to joining Bray's team and his leadership blunders, she got demoted to D-class and hadn't been able to rank back up until after she left the team and started doing quests with Touji.