Looking for this character...

zillaboom_6832aa1fb9

Does anyone know the model used in this?

https://www.daz3d.com/texture-expansion-for-back-updo-hair

Is it custom or something I can buy?

Quasar

I'm not sure exactly what one, but you can look here as she looks most like one of bluejaunte's characters.

https://www.daz3d.com/bluejaunte

cclesue

Bluejaunte' Murphy I betcha.

Quasar

I'm thinking Amira.

https://www.daz3d.com/amira-hd--expressions-hd-for-genesis-8-female

zillaboom_6832aa1fb9

Ah, perfect, thanks guys :D