Im confused Reflection 3

Well. First off I have to say that I love things that mess with my head. That being said, Sophies World is getting a little to weird for me. Alberto Knox went from lovable friend from afar to old guy who likes to dress up and never tell Sophie whats going on. Sophie's dad seems non-existent, Sophie seems a little nuts and Hilde appears to exist in some other universe. From piecing all this together I can only come to one conclusion. Hildes world is just an alternate version to Sophie's, where Hilde is Sophie. Alberto Knox keeps calling Sophie Hilde, not by accident. Alberto Knox's name is oddly similar to Albert Knod, suggesting that if Sophie is Hilde, then Alberto is Sophies dad in the other universe. This would make sense because Sophie is very confused and distressed about her father and Sophies mother thought Sophie should invite Alberto to her birthday party, suggesting that he could be her dad.(Maybe Sophie's mother is withholding some info.) There is also the issue of the magic mirror, because Sophie keeps seeing a reflection winking at her. I think that the mirror is a portal between the two worlds. This explains several things like the postcards that keep appearing near the mirror. It also explains the reflection that keeps winking at her; Hilde must be able to see through the portal. Whether this is all just a dream or a reality or something, it is certain that Alberto knows exactly whats going on and is going to tell her whats happening next