Was there an assistant to beethoven names Anna holz?

There is no widely recognized historical record of an assistant to Beethoven named Anna Holz. Beethoven did have several assistants and students during his lifetime, such as Anton Schindler and Carl Czerny, but Anna Holz does not appear to be among them. If she existed, her contributions might not have been documented or have been overshadowed by those of more prominent figures in Beethoven's life.