I like Shadowheart's hairstyle, too. I think it is quite unique and the very "geometrically" cut bangs framing her face give her a strict, mysterious appearance, which I think fits a cleric of a goddess like Shar.
Since having naturally black hair is seen as a blessing from Shar by her followers, I think it is very fitting that Shadowheart shows as much of her long black hair as possible while still having a practical hairstyle.
I like that her hair clip matches the pauldrons of her armour, and the iron chains around her ponytail remind me of chainmail. I think it makes her ponytail look elegant yet tough.
