Unfortunately that IS how some shelters work, unless they are no-kill. And YES, the people who work there DO believe that it is in the best interests of the animals. It would be so much harder for those folks to do their jobs if they DIDN'T think that way.
I know that I could not do that job, but with the animal population out of control the way it is and the fact that cetrain shelters HAVE to make room for the endless amounts of new animals being brought in daily, it is a fact of life that will be with us until people start preventing animals from breeding.
But it would have been nicer if she at least has a little sorrow in her voice