The fact that no word rhymes with Orange is proof enough that the Houses of Orange were divided on the subject of the Spanish invasion. The Spanish queen was even once overheard by one of her horses saying, "My best friend is an orange." Of course, that horse was named Glitterhoof - and was best known for throwing entire empires into envious fits of rage over whoever else may have possessed Glitterhoof. This could often lead to entire houses and branches of those houses being slaughtered in often dubious circumstances.
This violence led to a prince dying and passing his titles to his cousin, causing the Houses of Orange to call themselves Orange-Nassau. This is almost certainly a subtle message in support of the type of destruction that Glitterhoof was responsible for - albeit indirectly, but very intentionally. Or much worse, she likens herself to Glitterhoof of House Horse. I'll give her the benefit of the doubt that this is not the case - the alternative is unconscionable.