Sentence:  And like Jo March , who saw her sisters Meg and Amy involved in `` lovering '' before herself , Henrietta saw her <WSD>sisters</WSD> Rachel and Sadie drawn outside their family circle by the attraction of suitors , Rachel by Joe Jastrow , and Sadie by Max Lobl , a young businessman who would write her romantic descriptions of his trips by steamboat down the Mississippi . 
Meaning of the word marked with <WSD> tags:  a female person who has the same parents as another person