@Superlambaanana interesting post.
I think, for me, you've touched upon what I find so interesting about it.
You've said you think you share some traits with FH. Obsessions etc. BUT that you recognise this in yourself, and can manage it and control it, and live a normal life with a job, family, friends.
I think what I find so fascinating is the extent to which FH DOESN'T see it. How she views herself and situations so radically different to how other people her.
The level of delusion is just so morbidly fascinating.
When Piers Morgan said he could see a physical resemblance between her and Martha, she giggled and kind of rolled her eyes and said "really? That's hardly flattering!" She has repeatedly called Jessica Gunning fat and unattractive and she is mortified that she is supposed to portray her. Yet Jessica is almost 20 years younger than her, and she is certainly not ugly. Yet FH thinks she is so beautiful that she is offended by Jessica being cast.
I've seen her referring to herself as beautiful / attractive etc numerous times. She really thinks she is God's Gift.
Similarly, she doesn't see her behaviour as stalking. She thinks her behaviour is totally fine.
The Piers Morgan interview was so fascinating because for a lot of it, I don't think she was lying. She actually believes it.
(The eye movements, though, when she was watching the court scene from Baby Reindeer. When the judge was saying "you are charged with stalking between the dates of X and X" etc, and FH moved her eyes upwards as if she was trying to think what she was doing on those dates....that was lying. I think that was a big act for the cameras. Look how reasonable I am, I'm genuinely trying to think what I was doing on those dates, to see if I was stalking.)