Fist let me apologize if this comes of as a combative response, it is not meant as one. (you never know how people will interpret your response on the internet)
I find it rather funny that you would say that they are all battle hardened warriors and yet throughout the story all of them have multiple breakdowns. (showing emotions)
Shadowheart freaks out when confronting Shar and cries when the whole ordeal is over (parents alive/dead) - Significant other dies, just stands there.
Astarion freaks out when he sees his old lover as a vampire spawn and the whole Cazador thing - Significant other dies, he just stands there.
Wylls father gets kidnaped and he witness him becoming a thrall, what does he do? He freaks out and shows emotion. - Significant other dies, he just stands there.
Karlach is freaking out about dying and wanting to experience love? That finally happens to her and she is so happy. - Significant other dies, she just stands there
You get my point.
As for saving the main character, no I didn't actually mean them saving you or stabbing pools of blood (I might have worded that part poorly)

But a normal human reaction is to do something, run towards the body of the fallen, comment about using resurrections, saying some sappy shit like 'I cant lose you!' etc.
Either way its not that big of a deal, just personal preference. (and its a bit funny since act 1 has a lot of reactivity but as you progress through the story act 2 and 3 have less of it, and this scene was just a cherry on top for me)
There are other more important things in the game that need attention but as I said those are already covered in other threads.