The correct answer is:
"This character was not accustomed to living in a large mansion, Jane Eyre was."
In the excerpt from "Jane" by April Lindner, the character expresses feelings of loneliness and uncertainty about living in a mansion, implying that she is not accustomed to such an environment. In contrast, Jane Eyre, despite her humble beginnings, becomes familiar with the mansion of Thornfield as a governess.