DaoistDumbledore
I remember in a harry potter fanfiction a reincarnated MC created true white magic spells based on the properties of the patronus, after all in the world of harry potter magic other than dark magic is pretty neutral, and that MC had a innate talent for occlumency, so when voldemor was placed in howarts in harry's first year he managed to spy on voldemor's mind at his weakest moment to learn his knowledge and based on black magic spells I can create spells that are effective to counter them, Ginny could try to do the same and maybe she can later be called the "Light Lady".