Did Kuina Really Die?

Zoro fought Kuina regularly but found that after 2000 fights, he could never beat her. ... Kuina's body after her death. However, the day after making their vow, Zoro learned she had fallen down the stairs and died.

Did Kuina in one piece kill herself?

The anime/manga both made it seem like her death was accidental, but I honestly believe that Kuina killed herself knowing she would never be able to become the greatest swordsman simply because she is a female.

What happened to Kuina in one piece?

After making a promise to Zoro about becoming the greatest swordsman in the world, Kuina suddenly died. Her death hasn't been explained in the series to date. All we've been told is that she fell down some stairs and died, which is highly unbelievable.