" What's wrong between you two?' she said. 'You used to be like peas in a pod.'
I thought about everything I might say, then chose the simplest. 'We're different.'
Cate scoffed at that. 'So are ink and paper, but they get along very well indeed.'
'She's mad at me,' I said.
'Not mad,' Esther said.
'She thinks I'm the reason our daddy got hurt.'
Cate scoffed again. 'You're a girl. You're not a tree.'
'She was in the way,' Esther said.
Cate shook her head. 'Blame comes from the Greek for 'curse.' That's the root of it. A curse. Against the sacred. Which is what sisters are. Or should be. To each other.' She glared at us both. 'Sacred. "

― Lauren Wolk , Echo Mountain