
Doesn't look Negro to me, nor do her other existig portraits.
https://georgianera.wordpress.com/2017/01/31/the-many-faces-of-george-iiis-wife-queen-charlotte/
Brigerton is nonsensical Black propaganda.
do not watch Brigerton. It is a lie
There are two portraits by Allan Ramsay, full face and profile, such that if you saw a young American woman today with those features, you would think her likely part black.
She was seventeen. Later painters were probably told, make her look English.