All righty, @polkadots11's turn!! Top down on Nessa…
First impressions I glean from Nature is that it's a little sparse. I feel like I've met Nessa briefly at a party–I know she's quiet and mysterious, maybe looking a little fearful, but I know little to nothing about HER. I would really encourage you to add more specifics about how she acts around the people closest to her, how she handles herself in a royal court, how she treats her enemies, how she treats those beneath her station-wise, etc., etc. A LOT of what you currently have is public persona vibes, which is definitely necessary, just with some more stuff to round it out!
(Also, there's a very interesting idea of self-loathing at work here that I feel needs to be explored more. So she hates violent vampires, but a lot of her motivation is based in an instance where she was a violent vampire. Is there any self-loathing or fear of self there? Even mild? If not, you NEED to explain that. It would take a very strong person and quite a bit of time to fully get over and recover from such an incident.)
That being said, there is an issue or two I can spot in here. First up is her prejudice against humans. This is a touch confusing, given that she was in love with a human man. Is it more of an aversion to humans given what she did in the past? Is it an ingrained thing that she's working past? Whatever the explanation is, make sure to think it up/write it down!!
Okay, politics!! For starts, I really encourage you to delve deeper into Nessa's political views, given that she's going to inherit a throne. It's highly likely she would've received education in this kind of thing. But if you don't want to do that, a nice baseline I recommend to everyone is rating your characters on a scale of liberal-to-conservative, whatever that means in your world!! This is super helpful, as it works for even the most apolitical of characters. Also, politics can be used as a vehicle to define how open your character is to change! (And if you spice in her level of libertarianism, it can also describe how much your character likes the government!)
Backstory is very interesting and generally quite solid!! Couple things. One, the prejudice again–how would Nessa fall in love with another human after her first experience AND her prejudice against the species? Two, let's talk about her emotional availability. Nessa is secretive, closed off, and fearful–and given what I have to see on her Nature page, she's basically like that around her friends as well. So even if she feel herself falling in love, why does she act on it? Why is she suddenly willing to let someone in, even though it's dangerous and ended disastrously last time?
And that is all I have for you!!! Nessa is overall quite a well-developed character who just needs a touch more depth to make her great. Swing back by the thread any time, and for now, I hope that my notes are helpful to you!! :DD
Oh wow I missed this earlier somehow! Thank you so much, this is such a detailed and helpful critique! I definitely need to give more detail about her inner thoughts and feelings. Right now I have the focus on how her outward mannerisms changed after her trauma, and it's definitely sparse on her inward mannerisms for the time being.