This came to me in a vision and I simply must share it immediately.
Eva Stratt doesn't go to jail for the things she did during the creation of the Hail Mary. She doesn't go to jail because she forced Ryland Grace aboard the ship against his will. No, she can't. She has diplomatic immunity concerning anything to do with the project.
What she goes to jail for, is releasing Ryland Grace's full video logs to the public after the World Government Leaders decide to try to edit and bury them.
She lets them put handcuffs on her, lets them carry her off to spend the rest of her life behind bars because she refuses to let the memory of Ryland Grace, the man who saved Earth (and Erid) be tainted. She's a historian, and this is her way of making sure the man she betrayed gets his story put into record properly.
It's the least she can do for him, after all she forced him to do.