Seylana and Vontxu were a childhood-friends-to-lovers type story I think. Vontxu is not an easy person to get to know, and he likely never would've never found a mate were it not for his very longstanding history with Seylana; they've known each other since they were very young and have always been close. Seylana probably knows how Vontxu ticks better than anyone else in the clan, and Vontxu feels more comfortable with Seylana than he ever has with any other peers. As they grew into teens and then adults, the transition from friendship to romance felt as natural as breathing.

They married fairly young (and absolutely no one in the clan was surprised by their union). Neynari is their only child - they love her dearly but felt that more children would be overwhelming.

After Seylana's death, Vontxu kept her green hair feather on his songcord. Neynari has the pink one on hers.

Oh and by the way, Seylana has three older sisters. At the moment I don't really know anything about her sisters, just that they exist and Seylana is the youngest. Feels right. Maybe I'll come back and flesh them out more someday or maybe their existence will remain just a fun fact about Seylana, we'll see.

Moving on: now, I don't have any set ages for any of the characters in this "story", because it doesn't really have a plot, it's more just "ok here's some characters and here's some slices of their lives", and those slices can come at any point during their lives, so setting an official age seems a bit pointless. However, while I might not have a general "this character is [x] years old", I do have a bit of "this character is [x] years older than that character".

That said, Lunaya and Tanu are a fair bit older than Seylana and Vontxu, I think. Neynari and Se'txelu are about the same age, give or take a year or two, but while Neynari was her parents' only child who they had fairly young, Se'txelu has an older brother by six years. Lunaya and Tanu didn't marry quite as young as Seylana and Vontxu did either. All in all I'd say Lunaya and Tanu are maybe 10-15 years older than Seylana and Vontxu.