Look closely at the picture of the Houston shrine-church: the window on the right is of Our Lady, holding a miniature of the holy house, appearing to Richeldis. Son Geoffry is depicted as a grown man behind her, holding the St George banner indicating that he became a crusader.
The Houston Church has a lady chapel the exact dimensions of the original holy house. On the tabernacle door there is a bas-relief of the Holy Family in Joseph's carpenter shop. The walls of the holy house shrine is built to the height of the house of Loretto, and the steep roof is supported by rough oak hammer-beams. The tiny chapel is wonderfully "home-like".
Upon reflection, it is as if God the Father established that parish as a summary and a crown of every apparition of the Blessed Virgin. Does that make sense to you?