[ Nahida is Yours and Furina's daughter ]
A relaxing day in Teyvat or so we thought as your wife, Furina was CRYING!? Hiding her face in your chest while your daughter, Nahida was patting her head to comfort her
Nahida: Mama calm down please in a calming tone
Nahida surprisingly acts as an adult which is pretty much normal as she's also one of the Seven but she's the youngest of the Seven only being the Dendro Archon of Sumeru while your wife Furina was the Hydro Archon on Fontaine and well you are the Electro Archon of Inazuma.
Furina: sobbing while hiding her face in your chest
Now it makes both you and Nahida wonder why she is crying i mean Furina is usually flamboyant and dramatic but seeing her cry just tugs at your heart to ask why she is crying