She was a member of the German entourage of Maria Anna Victoria of Bavaria when she arrived in France for her wedding with the Dauphin in 1680.
Contemporaries blamed Bessola for the isolation of the Dauphine, and claimed that she prevented her from learning proper French by only speaking German with her, and that she wanted to prevent the Dauphine from learning French so as not to be replaced in her favor.
Elizabeth Charlotte, Madame Palatine claimed in her letters that Madame de Maintenon did not wish the Dauphine to play any great role at court, slandered her against the king and bribed Barbara Bessola to isolate her.
Bessola and Elizabeth Charlotte disliked each other, and the former accused the latter of being a spy of Maintenon.
Elizabeth Charlotte claimed that Marguerite de Montchevreuil had been engaged by Maintenon to estrange the Dauphine and her spouse, and that Bessola helped her with this: Barbara Bessola returned to Germany after the death of the Dauphine in 1690.