Update: The other hen didn't end up making it either. She had no visible external injuries but I guess she must have taken some internal damage or else the stress was just too much. She was found dead in the coop 2 days later. I was surprised because the day after the attack everybody left the coop and I couldn't tell which one was the injured one.5 eggs today.
I lost one of my layers today when one of our puppies managed to squeeze under/between the fence and the gate.
She hurt 2 of the chickens, 1 of which died in my arms.
Now we are trying to figure out the best way to reinforce the gate/fence area so that she can't get back in there again.
5 eggs today.