(your) daughter
嬡 centers on a daughter, specifically one addressed with affection or respect. The meaning is narrow and personal, referring to a beloved female child.
嬡 combines 女 (woman) with 愛 (love), suggesting a beloved female figure, specifically a daughter. The character likely developed as a phono-semantic compound where 愛 contributes both sound and the idea of affection.
A woman 女 and love 愛 together point to a beloved female child: your daughter.
For アイ, imagine your daughter saying 'I' (アイ) love you, tying the reading to the core idea of affection.
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