Those are basically just rumours and myths. I do not claim that there is any truth in them. Besides she has an "uncle" that came from Ikana who is a compulsory liar so she's got to have heard a hundred different versions of the Stone Tower myth. This is the one she liked the best.

As you say it is unknown how the Stone Tower came to be so folk will have made up a hundred different versions of it for telling around the camp fire.