i think you are missing part of the plot to do, as caissie is not usual MC you can control but olivia, now she can only go west, to the waterfall, be sure to grab a coconut first (if you want to get a bigger backpack - put it on storage so olivia can take it and use it later on), after that she may be able to go to swamp as have no other option to look for olivia, but bring her directly to swamp camp if i do remember wellSo after I went to met the guardians with cassie, the plot brought us into a new big camp where unlock the camp management, I send cassie and the other girl looking for food and materials then I left the camp keep going down try to go back the swamp(This big camp doesn't have a fast travel point!) at last I has return the swamp camp where I can use fast travel to the cliff camp. However Everytime I try to enter the swamp again from outside the cassie pop up thats the imiage where I toke. I also tried roll back the last save and leave the swamp by foot instead of fast travel but the issue stand still, cassie pop up no matter what I do
that fast travel point to your managed camp can be bought from shaman, or get it as a prize for giving the three newborn from feral women at cave