Most questions best answered when the game actually has this content and you can play it yourself.
By predator in advanced mode, do you mean the Difficulty Setting that makes escape more difficult? It just lowers all the numbers to make it more difficult, and things like just being eaten, a recent failed escape attempt, or Consensual Predator joining Amelia will raise awareness and make it even harder to escape. Only remedy is time; have to be prey for at least a few days for Amelia's predator to lower their guard and make escape more likely.