Sentence:  Her body was bent by age; her limbs trembled with palsy; her face, distorted into a mumbling leer, resembled more the grotesque shaping of some wild pencil, than the work of Nature's hand. Alas! How few of Nature's faces are left alone to <WSD>gladden</WSD> us with their beauty! 
Meaning of the word marked with <WSD> tags:  To cause (something) to become more glad.