That's consistent with what someone wrote about BPD traits around page 666. If it wasn't something I'd read around page 666, I'd not remember.
That was me.
I was thinking about it yesterday after posting, and while she is without any doubt cluster B and the people who belong to that cluster almost always share characteristics between the four disorders, I'm actually not sure she could be viewed as BPD. APD seems much more likely (though it cannot be confirmed unless she sits down with a psychiatrist or produces something that would show it). She definitely has some BPD characteristics, such as the aforementioned lacking sense of self and very intense and chaotic interpersonal relationships, but everything else we've seen so far points to APD, such as the exploitation of others without any regard for them and doing it just for fun, the arrogance, all the animal abuse; basically acting out all their fantasies without any filter.
To elaborate the differences, the existence of the people with (untreated) BPD is filled with much more personal themes and not simply causing mayhem or acting out fantasies. There are the aforementioned sense-of-self issues where they don't know who they are. This could perhaps be best exemplified by a feeling like something about you is missing, a chronic emptiness for lack of a better term. Rationally they know that they have all the limbs and organs, but there seems to be a hole deep inside their soul which doesn't let them feel whole. So they spend their entire lives looking for something that would fix them, be it people and being cared about, money, specific careers, fame, but more often than not, they never find this magical thing that would fix them.
Many BPD-s try to fill this void with personal relationships. For them, the whole world is basically divided into two camps - the people they trust and then everybody else, a very extreme version of black and white thinking. With the first group, BPD-s form these really intense relationships and constantly fear that these people will abandon them. The fear of abandonment is ever-present because the feeling of being appreciated by somebody (e.g., having somebody to talk to about deeply personal topics) makes them feel like they have found this thing they are always looking for and don't want to let that go. For this reason, they view their trusted friends as the most crucial thing in the world and try to do everything in their power to not let them go. Everybody else they simply don't care about, but this is not a justification for BPD-s to cause other people harm, as BPD doesn't take pleasure in it. As one of the main objectives in life for BPD-s is to avoid any actual or imaginary abandonment, Isabella's alleged animal abuse doesn't really fit into it. As a matter of fact, people with BPD generally revere animals much more than people because animals cannot abandon them. I have literally never met a BPD who takes pleasure in animal abuse. More often than not, they view animals as their best friends for the mentioned reason.
I am lacking crucial information here, but working with what is available, it seems that when it comes to sense-of-self and finding that missing piece like mentioned before, for Isabella, it's seemingly not so much about having people that care about her that she feels would make her happy, but rather being well-known. This aspect draws her away from the BPD and more towards any other three of the cluster. I need to mention again that the whole cluster is one big melting pot, and the available information is minimal and filtered.
I could go on and on about all this stuff, but the overall theme is that the people with BPD are much more inward-acting, i.e., if they are hurt, they are much more likely to harm themselves or indulge in other self-destructive behaviors. Basically, they try to be happy, but their hyper-emotionality, inability to control these emotions and the neediness that comes from trying to avoid abandonment doesn't let them and keeps them constantly depressed and on the edge. They might lash out, but generally only against the people they feel have wronged them personally and not innocent bystanders. However, Bella's actions are much more external. She seems to act because she wants the notoriety and doesn't seem to have any regard for the people even in her "inner circle," such as Louis. This can be evidenced by the Discord logs where she chastises him on multiple occasions. If she had this BPD characteristic, she would never do that because she would think that her acting so would push Louis away. Also, it doesn't make sense for somebody with a BPD to go and harass somebody for their own enjoyment they don't feel personally wronged by, as evidenced in this whole saga. A typical person with BPD is your ex, who hasn't gotten over a break-up that happened three years and comes up with increasingly desperate attempts to regain some version of the past where they thought they were finally happy. What we are witnessing here is something else entirely and seemingly done for very different purposes.
I hope that you're reading this, Isabella. If you are (or if any of her friends are, please refer her here), please PM me as I would really like to have an honest conversation with you. Not to judge you about anything that has surfaced, grill about the events that spawned this whole thread, or extract information from you; I don't care about any of that while I'm writing this here and am not planning on hoodwinking you. I would just like to talk to you sincerely, human being to human being, about your psyche and inner thoughts to gain a clearer understanding. I promise you the conversation will be completely privileged, and I won't leak a syllable of it because of the ethics involved of such situations. I hope you seriously consider this. To everybody else who is prepared to rate me dumb or autistic or whatever, I am not going to directly power-level here, but I know exactly what I am doing here, and it's far from my first rodeo.
