[SPOILERS] Just finished the show and Iam missing something about it

Just damn…this show is great but there is just one think I cant understand :

WTF is wrong with Outside Helly ??? , the inside you tried to kill you and yourself thats how mush she told she wants to get out of there and you still dont want her to ???
like she is evil as fuck or am I missing something here ?????

(Iam still learning English sorry for grammar mistakes)