Thoughts on the Portal 2 characters (mostly GLaDOS)

I don't know if anyone cares but my brain has been pondering these characters and their relationships to each other.

If you haven't played Portal and Portal 2 they're (a)amazingly awesome puzzle games and (b)Have pretty good science fiction plot integrated between the puzzles with a very strong focus on some great, if loosely sketched, female characters.
( Spoilers! )