Consensual Predators need to be met inside of Apex Predators. You can check out the 'Predator Info' button at the bottom in-game to see where they're currently located.
There is also a bug with the latest version regarding the Snake. If you try to meet an unknown Consensual Predator while they are prey to Snake it basically breaks the game. If you have done this, a Simple Load will fix it.
Viewing post in Amelia's Stranded Adventure comments
I actually learned recently that a Simple Load might not actually fix it if what you're saying is this issue persists after a Simple Load. Next update will fix this.
If the save file is really important to you and if you are able to edit your save file in something like a Notepad, if you go into it, look at the stuff saved for Consensual Predators, and change 'allowedToMove' to true I believe this will fix it. Otherwise you will have to start a new game.
Hopefully next update won't be as rough! At the early part of development, Consensual Predators were coded just enough for Bunny girl to work, but now that a 2nd one exists, some glaring issues got through.