I sort of expected the ending once she started asking about Jimmy's childhood experiences and he gave her a no doubt much edited version of life with his mother and her "friends". I thought that Jimmy would have been the one to end her life, out of love, sort of like the ending to Of Mice and Men.

But no, she did it to herself. Her only value was her face and no one wanted that any more. Even Jimmy didn't want to kiss her, or at least that's what it looked like to me.

"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.