Brat.
But in all honesty, Aneurin's dead, and this is just another sheepfucker with his face, whose touch will be a knife in Valentina's heart. Islwyn helped kill Aneurin, and Yorwrath is all she has left, which isn't enough, not after what she had with Aneurin. And Caoilfionn is just the Greek chorus of doom.
And Tahn has a very valid point. there's been plenty of books and movies that have dealt with things like what Aneurin's been through - same body, wrong person inside it. A happy ending's pretty damned unlikely for any of them, except, possibly, Grwn.