When people take on a pet they make a committment to care for that animal to the best of their ability. There was no need to have these animals put to sleep when other options were available.
I suppose she could have looked in to other options but some people are over the edge about animals. I don't remember people being this way when I was growing up, but I could be wrong. Animals are animals, people take them on for different reasons. If she's going to get all wacky about putting the dogs down she definitely shouldn't have put them down and probably should have never taken them on in the first place.