In this excerpt from "my last duchess" by robert browning, what can you infer about the duchess?

the bough of cherries some officious fool
broke in the orchard for her, the white mule
she rode with round the terrace—all and each
would draw from her alike the approving speech,

a.
she was a good-humored person.
b.
she was generous with praise.
c.
she was reluctant to acknowledge favors.
d.
she was hardworking and diligent.