Final answer:
The provided information does not mention Frau Bilder, and the excerpts given cover subjects from 'A Doll's House' and achievements of the artist Klumpke. Without the correct context, it is impossible to accurately answer the question regarding Frau Bilder's contributions to the plot.
Step-by-step explanation:
The question asks which two sentences best describe how Frau Bilder contributes to the plot. However, the information provided does not mention Frau Bilder and instead includes excerpts from different contexts. From the text provided, there's no clear indication of a character named Frau Bilder.
It appears to be a confusion, as the text samples cover subjects from Henrick Ibsen's play 'A Doll's House', discussions about the influence of mothers from the same play, and achievements of the artist Klumpke and her encounter with Rosa Bonheur.
Therefore, it is impossible to accurately answer the question about Frau Bilder with the given text excerpts. However, from the narrative style and content of these excerpts, we can identify that the correct subject matter is English and pertains to literature analysis.