I was thinking more, she preferred her cooler middle name, the same way Max prefers not to be "Maxxie".
So, now explain how Kovu wasn't Scar's son, despite the obvious appearance, mother, symbolism, song numbers, Simba's reaction, and the related media and merchandising all calling him Scar's son.
Oh right. Him and Kiara would be cousins if he was Scar's son. Someone realized this at the very last second and dubbed in a muttered a single under the breath line.