Board Thread:Theories Discussion/@comment-27337852-20151203161328/@comment-6986530-20160819170746

It's more likely that her being a bear was Eve's problem, not Meta's ability, as there is as there is no reason why she would turn her babies into apples.

Anyway, she might have a special ability, but the phrasing you're using (based on a bad translation, probably should be fixed <---<) is misleading. It's not a "rare magical power" as in a rare magical ability, it's referring to how strong a magic user she is. As in, her amount of magical power is what's rare. Another translation put it as "rare, high amount of magic."