Albert and Alexandra
I can't get a read on Albert's character at all. He seems to understand Alexandra fairly well -- so why couldn't he have helped her, even a little? She's a shy, nervous, sheltered young woman in a stressful situation, but instead of taking that into consideration, he, and many of the others, seem to blame her for the way she is.
Albert seems more sure of himself than she is. Surely he could make some kind of effort to be kind to her and encourage her. It isn't like she's deliberately freezing him out -- she's trying hard to reach him. (As a fellow introvert, I can see that, and I feel for her!)
I'm crazy about Sir Alec (happy 100th birthday to him, by the way! :-) ), and I think he does his best with the role. But I can't help thinking it's not a very well-written role.