Mrs. Henry Wood 
East Lynne 

East Lynne is an English sensation novel of 1861 by Ellen Wood. A Victorian best-seller, it is remembered chiefly for its elaborate and implausible plot, centring on infidelity and double identities. There have been numerous stage and film adaptations. Lady Isabel Carlyle, a beautiful and refined young woman, leaves her hard-working lawyer-husband, Carlyle, and her infant children to elope with an aristocratic suitor, Francis Levison, after wrongfully suspecting and becoming jealous of her husband’s friendship with Barbara Hare. However once abroad with Levison she realises he has no intention of marrying her, despite her having borne their illegitimate child. He deserts her, Lady Isabel is disfigured in a train accident and the child is killed. Following this Isabel is able to take the position of governess in the household of her former husband and his new wife allowing her to be close to her children but which also becomes a source of great misery. The pressure of keeping up a facade and being constantly reminded that her husband has moved on eventually physically weakens her. On her deathbed she tells all to Carlyle who forgives her.(Excerpt from Wikipedia)