As long as the turtle was hurt...
I always tell the wife, when an animal gets before your car, try a little to brake and swerve to get around it, but just accept the fact that hitting it is far better than ending in the ditch or against a tree.
I hit a woodchuck once. Not even an opportunity to try to brake or avoid it. It shot out from the side of the road and ran right in front of my, right un der the car.
I was not a fan of woodchucks at that point an way, so I was not disappointed or upset that it bought it. I did check for damage though. There was none.