oh no-our own GENERAL is going to sell West Point to the British!
Arnold is going to give West Point to the British!
Sophia is hired by Townsend to spy on the British, and it turns out that the main person she'll be spying on is Andre.
this man is a SPY
Sophia finds out that "Anderson" (Andre) and "Mr. Moore" (Arnold) are going to meet and "Mr. Moore" will give "Anderson" West Point.
Sir I was the one who found out your plan
After many attempts to get to try and stop the meeting she does somewhat, and goes to tell someone. She goes to Mr. Paulding, knowing that he's nearby, and tells him what she knows and he agrees to watch for him.
Major John Andre
I adored him...but yet I'm the reason he was caught and killed...
Sophia has just given the signal to Mr. Paulding that she sees John Andre coming through a path in the woods, so now their searching him. They will soon find evidence that he's a spy. he will then be sent to a prison house to be put on trial.
John Andre has just been found guilty of being a spy and will be hung. When Sophia heard this she went to see him and tell him that he stayed in her house and that she was the one who got him caught.
In 1824, a bit after Andre has been buried in his final resting place in England, Sophia travels across the ocean to visit him. She places the-now faded-blue ribbon that he gave to her onto his grave.