The Mother Instinct (1917)

When her baby daughter Eleanor is traumatized after her father perishes in a storm at sea, Mother Coutierre sends the girl to live with her aunt in Paris. Years later, Eleanor, now a successful model in Paris, is surprised by a visit from her elder sister Marie, who has come to hide the birth of her illegitimate child. When Mother Coutierre arrives and believes Eleanor to be the infant's mother, Eleanor continues the deception so that her sister can marry Pierre Bondel, a fisherman. Soon after Marie returns to her village of Normandy, her brother Jean is accused of murdering Raoul Bergere, a man of loose morals of the village. When Jean's conviction seems certain after witnesses testify that they heard him threaten to kill Raoul for stealing his boat, Marie confesses that she killed the rogue for fathering her child. Following her expose, Pierre takes Marie into his arms and promises to care for her and the child, and Eleanor's honor is at last vindicated.