Quick answer: Lizzie and Emma remained close for years after the 1893 trial, but their relationship deteriorated around 1904. Emma left Maplecroft in 1905 and they did not reconcile.
1893
Emma defended Lizzie and testified for her during the trial.
Maplecroft
The sisters lived together for more than a decade after the trial.
1904
Lizzie's friendship with Nance O'Neil became a source of tension.
1905
Emma moved out, and recent reporting says they never spoke again.
Monster vs history
The series dramatizes their conflict, including scenes not supported by historical evidence.
Source: PEOPLE
Fact-check note
This article distinguishes the Netflix dramatization from documented history. Lizzie Borden was acquitted in 1893; claims about guilt, private relationships, motives and events not established by surviving records are described as fictionalized or disputed rather than settled fact.
Netflix Tudum: The True Story · Netflix Tudum: Ending Explained · PEOPLE: Fact vs Fiction · PEOPLE: Emma/Lizzie Fact Check
Related: Lizzie and Emma Borden: The Real Sister Relationship Behind Monster
Related: Nance O'Neil and Lizzie Borden: Their Real Friendship Timeline
