How does this passage create tension in the story?

B.) The sentences suggest that grete is disgusted by her brother and dislikes caring for him.

Explanation:

This section of the text uses several methods to make us as readers, get invested and create tension in us, for example it starts with the small details that she notices, this gradual description makes us wonder what will happen next, creating tension. Also it states that she used a rag, this implies that she was disgusted by it because it belongs to her brother (there are no other reasons implied for the use of a rag)