This LoRA is for the character Cho Chang as played by the actress Katie Leung. It was trained with images of the actress only in that role (both movie stills and promo shoots) and only when the actress was over 18. (FYI, the actress was 3 years older than the character she played).
Default Hair: long hair, blunt bangs
You can generate the character in the Hogwarts school uniform and holding wand but the look is very baked in so if you find you have trouble adjusting it, try just using "school uniform". You can also use "movie still" to generate an image closer to the aesthetic of the movies.
If you want the character in her GoF dress robes, use the prompt "dress, dress robes, updo hairstyle" in the prompt but since there are only a couple of promo images of the actress in those robes over 18 it may take a few tries to get it (see example). Again, results may be poor.