It seems as if the time slow down for Doc. Bullets whistle and richoshette as he rush toward his first love, and the mother of his children.
She loved them so much, that when she felt this is over, she thought about them.
Emotional, Doc probably isn't as precise as he would have wished to be right now, he stop the massive bleeding, but it's still somewhat bleeding.
Also chest is never a good place to be hit at.

He might notice, or not, but Sandy Hoof and his grandma storm out- she use her machine gun, she doesn't hit, but it seems to be enough for the griffins to decide to leave.
Beside one who stop. 'No! Ms. Glassed unicorn! Prospi.. right?' He fly trying landing next to Doc, but intimadated by Granny's machine gun which kept on barraging.
"...I sorry. She wasn't our target..' and join his comrades.
The parrot who is fighting Greeda disengaing and running away- stopped by the Sherrif.