beautiful
娃 centers on feminine beauty, often describing a beautiful woman or girl.
娃 combines 女 (woman) with 圭, which likely contributes the sound. The exact historical development is uncertain, but the structure suggests a phono-semantic compound related to feminine beauty.
A woman 女 beside a jewel-like 圭 shape: imagine a beautiful woman adorned with jade, radiating elegance.
For ア, picture a beautiful woman saying 'Ah!' in admiration of her own reflection: 'Ah' -> ア, and her beauty is undeniable.