The second moon fades away as they walk on a timeline where chloe dies. Also we see three bullets for a few seconds, that chloe wears as a necklace, maybe meaning the times she has to die shot by a pistol (this is the second one so chloe probably will "resurrect" and die another time). Also, what if it's all a loop and Max already seen the catastrophe but she was drugged and she was able to rewind till the very start of the game( where she wakes up in the classroom ) but able to remember only a few things of the future? Mind=twice blown