Your early recollection, my dear, will supply the gloomy medium through which all this was seen and expressed by the writer, and the distorted religion which clouded her mind with impressions of the need there was for the child to expiate an offence of which she was quite innocent.
There are no more uses of "expiate" in the book.
Show samples from other sources
She knows she can’t expiate her sins, but hopes to heal some of the wounds.
And when there is also a feeling of guilt to be overcome, and, maybe, expiated,