Family #314 in the 1834 Grimm census.
Family #68 in the 1897 Grimm census.
She was the second or later wife of Lorenz Stähl, according to the 1897 Grimm census. The children in that same record are not identified as being by Lorenz's first wife Maria Barbara, so it seems likely that they were in fact his children by second wife Maria Magdalena. Lorenz may or may not have been the second husband of Maria Magdalena, but based on documented marriage patterns, it seems more likely that her first marriage wasn't when she was in her forties.
↑1834 Census of Grimm in the District of Saratov, Russia, dated 2 February 1835; Translated by Brent Mai, Concordia University, Portland, Oregon; Published by Dynasty Publishing, Beaverton, OR, USA; Published 2011; page 86, family #314, Friedrich Jakob Walter family.
↑1897 Grimm (Lesnoi Karamysh), Russia Census List, Translated by Richard Rye, Compiled and Edited by John Groh, Contributor Henry Schmick; American Historical Society of Germans from Russia, Lincoln, Nebraska, USA; Published 2017; page 263, family #68, Lorenz Stähle family.