Function that highlights items you can interact with upon keypress

Here is a video showing exactly where she is. It's easier to just watch the video to find malena but basically go away from the waterfall along the path leading back to the village, then make a left along a SHORT path, then make a left again on another path that heads south west sort of. You'll see a cut scene with some guy asking for help, then you fight some monsters, keep going up by the broken wall after you fight them, she is hiding behind the wall, watch out for the traps.

When I passed this place it seemed that her loud speech would draw guard's attention. And Geralt doesn't pick the lock, he calms the woman to be quiet to keep his runaway silent.