Answer the following question:
Why does the author say that Louisa Mebbin had a "protective elder sister" attitude towards money?
Miss Mebbin was a paid companion of Mrs. Packletide. She was money-minded and saved each and every penny given to her as tips in the same Moscow hotel. She blackmailed Mrs. Packletide and forced her to buy a cottage for herself. Looking at all these behavior of her, the author says that Miss. Mebbin had a "protective elder sister" attitude towards money.