Yea there is a Chapter 1: The Hunt in my quest log, but I cant abandon it, what should I do?

I am at the part where Arcann and Senya joins me, but after the cutscene only Arcann showed up as a passive follower and Senya is no where to be found! I tried to take the fight to Vaylin in the end but there is no way to defeat her without the heals. She just cuts down Arcann and then me in like a min. Tried to reset, change difficulty etc but Senya just wont show up so I am stuck, can anyone please help? Thanks!:confused: