Tolkien- For the Love of Eowyn!

[Nilpaurion Felagund]

there would surely have been someone (a descendant of one of Theoden's four sisters) to take over the reins of government. There had never been a ruling queen in Gondor anyway so why would she expect to take the throne?

[Théoden: ]"Is there none whom you would name? In whom do my people trust?"
"In the House of Eorl," answered Háma.
"But Éomer I cannot spare; nor would he stay," said the king; "and he is the last of that House."
"I said not Éomer," answered Háma. "And he is not the last. There is Éowyn, daughter of Éomund, his sister. She is fearless and high-hearted. All love her. Let her be as lord to the Eorlingas, while we are gone."

Japan might have its first empress, just because the people wants it so. These people want Éowyn. Who could tell her not to take the throne?