Wont let me progress in Bounty of Blood

I ran ahead to get the core for Oletta during the quest Off the Rails and then she vanished, now the way point for the quest is in an area I can’t get to yet and I’m really confused.

Can you post a screenshot showing your current location and where the waypoint is? You may just be missing something like using a crystal to blow an opening or using one of those plant jump pads.

I’ve tried to figure out how to get there, but nothing has worked. I’ve even looked through walkthrough to try and figure it out.

Go up through that archway, to the upper level and follow the wall around. It will open up into another area with a hut containing a jump pad. Take that and follow the path through to the waterfall overlook, drop down, and go through the tunnel.