YOU NEED A NATURAL ABILITY AHHHHHHHHHHHHH
;;
/you tease me with posting in enrolls/
but that aside if you want her to be very 'rabbit' like, I would say shape shifting would be the ability to go for, otherwise her nat form would be an incorporeal lady (who imo should have star/space patterned skin but das just me).
Overall, the focus is on her being a rabbit based monster so I would lean more towards a Nagual, wolpertinger, jackalope, or even an
Al-mi'raj.
The Iele is a good species, but again, your focus is so heavy on her being a rabbit that It think a shapeshifter race that allowed the nat form to be a rabbit would be more suited. I did notice that 'were-rabbit' is still in title, and unfortunately, as with the past enrolls, a were-rabbit was nix'd due to lack of mythos/not something people would fear. BUT, like past ones, its just a matter of finding a myth that DOES allow the rabbit base.
These are only approval pert issues rest is more cohesive/Personality:
-There isn't a real basis for halloweener to eat other halloweeners! If they do they
explode. However, normal predator/prey based fears are common. IE, Canine beings have an antagonistic relationship with feline. Felines adverse to water and like small animals. It's a minor canon note, but worth mention. The rest however if fine for being skittish!
Meat- This isn't personality as it's personal choice/habit. Also remember, halloweener don't need to eat, its just a social/off hand commonality they can participate in.
A lot of her 'personality' is more her hobbies and quirks. While they provide a slight insight, they're not relevant to interactions or internal workings. IE: Her fashion points that she is creative and imaginative, yet no info is provided on how this aspect affects her relationships. There are underlying themes of proper, polite, shy- but its muted under the extra info. The info you have is good, but it might help to bullet point out her core traits to provide insight on the primary factor that make her her. Or, highlight how it works and ties in to her as a person/interactions both good and bad.