Nellie Dies to Save Her Colt

Due to the complications of the colt being tangled inside of her, Nellie has to die for the colt to remain alive.
" 'There's your colt. I promised. And there it is. I had to do it-had to.' He stopped and looked over his shoulder into the box stall. 'Go get hot water and a sponge,' he whispered. 'Wash and dry him the way his mother would.'"