When you know they are going off to the right place and its going to be a great home and you have done all you could do for them and more it makes it easy, I find. Its quite bittersweet. The sweet is the part that makes you the fosterer because its thinking about what is best for the animal. The bitter is the selfish part, that makes us miss them. When everything has gone right its easy to push the bitter part aside because you know its absolutely right for the animal. Its when it goes wrong, or you are not comfortable with where they are going that the problems start.