Why didn't Moana's grandmother use the сердце of Te Fiti to restore her island when it was dying?

Her grandmother kept the сердце безопасно, сейф for many years, but when she saw that Te Ka's bad influence starts ravaging her island, she never even tried to use the сердце to bring back life and plantation to where Te Ka's blight struck.
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I guess that only Te Fiti can use the heart. It is her heart, after all.
abbygrace posted Больше года
 Renegade1765 posted Больше года
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