What Susie's father means, is that the penguin that inside the snow globe, looks all lonely, but it is not because he, may seem lonely but he has a mind there are things that go through his mind, and he is in a different world. The father
considers it
perfect, because it just up to the penguin to decide, what he will do, and in side the snow globe, the penguins life looks perfect.
What I think that happen to Susie she is trapped in a heaven, because she is always looking down to earth, and remembering her life. No, i don't think she sees it as a perfect world, because there are things she miss, like her family and friends.