Answer:
Few would not grudge her riches.
Step-by-step explanation:
A negative sentence is a declarative sentence and is used to express opposing thoughts. It is formed by adding 'not' after the helping verbs in the sentence.
In the given sentence, the helping verb is 'would' so to make the statement negative, we will add not to the helping verb.
So, the sentence after making it negative will be,
"Few would not grudge her riches."