Fight or Flight

Throughout "The Girl who Fell From the Sky" suffering and pain are often dealt with. There are so many different ways they are dealt with but what I've noticed is that when a problem arises in the book the characters are faced with a fight or flight response. Time and time again however, almost every single character chooses to fly away and escape the problem.
One significant example of this is when Rachel continuously bottles up everything inside of herself. Literally. When faced with conflict Rachel seems to flee and flee and run some more until it finally catches up to her. Her method of fleeing is storing everything in an imaginary bottle until it overflows and explodes, relating to the phrase "all bottled up." Eventually even though she flees most of the time, when she doesn't it is because her bottle explodes and she also explodes on everyone. Something opposing this but also a method of flight is what her grandma does. Her grandmother takes something out of the bottle to temporarily replace her feelings, and even though this works, when the effects of the bottle run out and the bottle runs dry she is faced with her problems again, until they eventually catch up to her.