This is what I found browsing genealogy sites,but maybe you also know this!So,just in case:
"Maximiliana was born in 1608, the tenth of fourteen children of Graf Karl Franz von Harrach zu Rohrau and Freiin Maria Elisabeth von Schrattenbach. In 1627 she married Graf Adam Erdmann Trczka z Lipy, son of Graf Jan Rudolf Trczka z Lipa and Marie Magdalena z Lobkowicz. Their daughter Maria Isabella would not have progeny. As Wallenstein's closest confidant, Adam Erdmann was murdered, along with Wallenstein's other close supporters Freiherr Wilhelm Kinsky, Rittmeister Heinrich Niemann, and Feldmarshall Christian Ilow at a banquet in the castle of Eger on the night of 25 February 1634.
Maximiliana was, at the time of the murder of her husband, with her sister-in-law Elisabeth Kinsky in an inn on the market place in Eger, opposite Wallenstein's headquarters.
After the death of their husbands both women were brought to Pilsen and interrogated. The board of inquiry could not produce proof of the guilt of Maximiliana's husband in the supposed betrayal by Wallenstein of the emperor; immediately after the news of his death Maximiliana had burned the entire correspondence of her husband; given the situation this showed considerable presence of mind. The inquiry also treated her with great forbearance as a daughter of the late, highly respected Graf Karl Franz Harrach.
The contemporary chroniclers also deal very moderately with Maximiliana; Graf Franz Christoph 'der Jüngere' Khevenhüller writes about her: '...however the wife of Trczka, a born Countess von Harrach, has no knowledge of this (the supposed betrayal by Wallenstein and his advisers), and his Imperial Majesty feels great compassion for her over the manner in which events transpired, and great revulsion over those events'.
Countess Elisabeth Kinsky was able to reach Dresden in safety. When the emperor received the news a few days later of the successful conclusion of the action - of the death of Wallenstein and his followers - he ordered that 3,000 masses be said for the deceased in the churches of the empire.
Maximiliana later married Graf Johann Wilhelm von Schärffenberg, a cousin of Graf Johann Ernst von Schärffenberg who had long been condemned over his knowledge of the supposed betrayal by Wallenstein. She and Johann Wilhelm, the son of Karl von Schärffenberg, Herr auf Spiegelberg, and Polyxena von Rogendorf, had seven children of whom two daughters would have progeny. She held the powerful position of 'Fräuleinhofmeisterin' (stewardess of the ladies of the court) of Eleonora II Gonzaga, widow of Emperor Ferdinand III. Maximiliana died in 1662 aged fifty-three or fifty-four."
