This Is The End-The Last Of Us Ep 23

Making our way closer and closer to the hospital, we found a hiccup of fast running water. I rescue Ellie but she took on too much water and as I started chest compressions, the fireflies found us and knocked me out. Upon waking up I found out that Marlene is still alive and they are about to do surgery onto Ellie. But the ramifications is that she won't live from it. So, I take matters into my own hands to stop the surgery, save Ellie, and get out of dodge. Was it the right call?