Short answers, pulled from the story.
Maria Anna Thekla Mozart entered the world on the 25th of September 1758 in Augsburg, Germany. She was the third daughter and only surviving child among five born to Franz Alois Mozart and Maria Victoria Eschenbach.
Ten letters from Wolfgang to Marianne survive today under the name Bäsle letters and contain abundant scatological and sexual humor unlike typical correspondence of their time. These documents reveal a unique bond between two young people who shared private jokes including phrases about shooting off guns in the rear while embracing his cousin.
Marianne remained unmarried throughout her entire life while raising her daughter alone after giving birth to an illegitimate daughter named Maria Josepha in 1784. The child's father was Canon Dr. Theodor Franz de Paula Maria Baron von Reibeld who lived from 1752 until 1807 and provided generous support for both mother and child.
The family relocated to Kaufbeuren in 1812 before settling permanently in Bayreuth by 1814 where they resided for twenty-seven years until Marianne passed away at age eighty-two on the 25th of January 1841. A portrait sent by Wolfgang from Mannheim in 1778 appeared in her estate fifty years after its creation.
Her stay lasted approximately three months despite disapproval from Leopold Mozart when she traveled with him from Munich to Salzburg in January 1779. Their warm relationship cooled significantly after her return home and their final reunion occurred in Augsburg in March 1781.