If you think that the sun’s moving and the ground’s drying out are “contradictory,” then you are beyond reason.
The children saw the Lady, and no one else did. Francisco saw her, but never heard her.
Nobody ever asserted that this was a normal event, perceived exactly the same by everyone. It was a miraculous event.
But the overwhelming part of 70,000 people witnessed the miracle.
You can choose to be like those who witnessed the cure of the man born blind and the man with the withered arm, or the raising of Lazarus, and rejected the evidence. Free will, you know.
70,000?
There were 30-40,000 people, and even believers claim to have seen nothing.