Geez, I already delete those games. I guess you can replicate it by: first not having the horse girl in your team, then let an enemy eat Eloimaya and lastly let Eloimaya gets digested, return to village home by pressing F4 (I think it was that button, just use the fast travel command) and there it is, she is gone.
I think it happens with Lalita too but Andrice I havent teste it yet because there are few enemies who can eat her so she is safe most of the time (the invisible Assasin female can swallow her, so watch out on the roads)
I'm playing solo with the MC because of the fear of lossing them but is kinda more challenging and fun: I have discovered that Lamias and Harpys are really fast so I be friend one and travel the world on their bellies, it is quite an experience