Red Dead Redemption 2 offers an optional honor story quest called “Help Sadie or Not”. This quest involves killing the person who killed Sadie’s husband and destroyed her ranch. Sadie can either be ridden along with you or by yourself. If you are riding alone, you will need to go to Hanging Dog Ranch and wait until the cutscene ends. After that, the Shootout begins.
You will be asked to help Sadie when you first arrive. She wants you to take down the O’Driscolls. She will scream her name and will tell you that you can help her by stealing the O’Driscolls’ barn. Then, you will be asked to kill all the people in the barn. Later, Sadie will tell you about her husband.
The plot of the game is complex and contains many twists and turns. Characters are introduced in the first two RDR games. Bonnie MacFarlane makes her first appearance in RDR 1 and Sadie Adler makes her first appearance in RDR 2. After you have met her, you can ask for her help in escaping John. Then, you can ride across the map to meet Arthur. Afterward, you can meet him at the Hanging Dog Ranch.
Sadie plays an important role in Red Dead Redemption 2’s main campaign. She goes with John and Charles to seek revenge for Arthur’s death. After killing Micah, Sadie then presumably heads to South America to find Arthur’s body. The game’s single-player campaign also features Jake Adler, although he’s only mentioned in passing. Further information can be found in Red Dead Online.