That's fair enough, but the instance I was pointing out IS dialogue. Hermione would never use "vest" with the US English meaning. Hopefully there's some common word in both US and British English for a woollen item worn over the shirt/blouse that could be used.The reason we use American English when naming wardrobe or interface elements in the game, but keep British English for dialogues is to keep the game more accessible for international audiences. We understand that players come from all over the world, and by using a combination of both dialects, we hope to make the game more inclusive and easier to understand for everyone.
While it may seem unusual to mix dialects, it's actually a common practice in the gaming industry. By using both American and British English, we hope to create a more neutral experience for players who might be more accustomed to one dialect over the other. We want our players to be able to enjoy the game without being distracted or confused by unfamiliar terminology.