oh so habituous

Why must it be incredulous? Why wouldn't Mary visit and offer succor? Why wouldn't the faithful dead (saints) still come--in some manner--among us?

I don't know that you read the story carefully enough; this isn't about being visited by dead saints, or by Mary, but by a particular Maria, who reported her trances in one part of the world, to have them verified by people on the other side of the world!

She called it "bi-location":

"Often consulted by King Phillip IV, Mother Maria said she visited the new world in a manner known as “bi-location,” a phenomena that allows one individual to appear personally in two places at the same time.

How did she visit the Indians of Mexico and Texas?

While praying for the welfare of the Indians, she often fell into a trance and was taken by God, without her awareness, to a different place where Indians lived. She said she saw the Indians, heard them speak and felt the difference in the climate of the land.

While in this state, God commanded her to speak and preach to the Indians. It seemed to her that she was speaking in her Spanish tongue, but the Indians understood her as if she were speaking in their language.

Mother Maria saw and heard everything with clearness, and when the trance ended, she found herself in the same place where she lost consciousness.

From 1621 to 1631, she is said to have visited Indians frequently in Mexico and East Texas. Her visits may have numbered as many as five hundred."

This is much more interesting than seeing ghosts or spirits of the dead; this is the spiritual-sensorial transportation of someone living!