But not killing all those titans in that situation in no way hinders any of those objectives, and could possibly further them.
I'm with Kraco. It was free attacks on a huge pack of Aberrants, and possibly preventing the female's escape as well. There was no reason NOT to do it.
I expected another intelligent titan like the Armored one to show up and free her, especially once she screamed.
I was pretty close.
And also diamond hands. Don't forget diamond hands.
Speaking of which, if she can turn part of her body super hard, why not just do the back of her neck?