Question

Why did Mrs.Packletide give up the big game of shooting

Answer 1

Because once she had played a big game of shooting( shooting a Tiger) which led to a huge amount of loss in her life. As a result she gave it up for her won shake.

Answer 2

Mrs. Packletide gave up big game shooting because she had to pay a really heavy price for indulging in the sport. She had paid the villagers for organising the shoot. Moreover, she had to pay Louisa Mebbin a considerable sum for keeping her secret. The cunning woman had blackmailed Mrs. Packletide into gifting her a cottage.
Hope it helps you.