She has to admit, Elsa has got an exceptional inner strength.
Being rejected – by your parents – for your magic, is… something she has never experienced, even with a conspicuous number of painful punishments from her mother. But magic, is a part of her, simple as that.
She feels a flicker of jealousy, when she thinks of Elsa's sister. She thinks of her sister, how Zelena has hated her, nearly killed her son, nearly killed Snow's baby. For a moment, she wishes someone would have given her the chance to have had a loving sister. Like Elsa has Anna.
Too late.