Theorycraft about Vex

There is a secret, a lie in a plain sight right before us.

Vex is not a siren.

Not True/Natural one.

Why?

There is a limit of 5 sirens existing + 6 locked up. And we know (probably) all 5 of those (Lilith if still alive, Ava, Amara, Tannis and Asha).

All playable sirens so far had their name taken from some kind of goddes.

Vex tatoo color is similar to eridium.

And there is my theory.

What if Vex is result of experiment to create artificial siren by creating tatoos with eridium?

And what if she died?

Borderlands 4 Vault Hunter team theme so far is dead (dead without exosuit, dead cult).

Ashe powers are based on life and death (living familiar and flying death with scythe).

Vex either survived tatoo grafting and died after it or died right after it.

And was ressurected thanks to Lilith smashing Elpis.