What does she do to help him? Is she wise in this?
To help Tricki, Mrs Pumphrey gives him little extras between meals like malt, cod-liver oil, and a bowl of Horlicks at night. She also feeds him cream cakes and chocolates because she cannot bear to refuse him. Later, when Tricki is convalescing, she sends fresh eggs and bottles of wine to build his strength and enrich his blood.
No, she is not wise in doing this. Her overindulgence and excessive feeding are the exact reasons Tricki became hugely fat, listless, and ill. Instead of following the vet's strict advice to cut down his food and increase his exercise, she continues to pamper him, which harms his health rather than helping him recover.
Explanation
The question asks about Mrs Pumphrey's actions to help her dog Tricki and whether those actions are wise. The text clearly outlines her methods: feeding him extras like malt, cod-liver oil, Horlicks, cream cakes, and chocolates, and later sending eggs and wine. However, these actions are counterproductive. The vet, Mr. Herriot, had explicitly advised a strict diet and more exercise, which she failed to enforce. Her foolish indulgence caused his illness, making her actions distinctly unwise.