The involvement of Colette in The Witcher has been all but confirmed. We have seen her in Adele Oni’s Instagram stories several times and she even mentioned Colette by name.
It wasn’t hard to guess that Colette is playing Véa, but now we know that for certain thanks to her CV. She is also listed to appear in a Charlotte Brändström episode who is directing episodes 5 and 6. This lines up perfectly with the previously known information that the short story “The Bounds of Reason” along with its characters like Véa, Téa and Borch Three Jackdaws will appear in Episode 6 of Season 1.