Actually to all the people saying that Jane betrayed her husband and Anne: Historically that's not true. Jane did not give the testimony of incest, that "honor" belongs either to the Duchess of Worchester, Lady Wingfield or a "Nan Cobham". Jane on the other hand actually stood by George when none of the Boleyns did, sending him a message of comfort and promising to try and petition the king on his behalf. As for Jane and Anne's relationship, they did seem to be on good enough terms with each other. Jane was honored at Anne's coronation parade into London by being allowed to ride with the highest ranking Duchesses of the Realm, far above what her title of Viscountess allowed her. She traveled with Anne to Calais and was part of a masque that Anne put on to impress Francis. Later she and Anne tried to get rid of a rival lady at court, though the plan backfired on them and Jane got banished from court (for a short while) instead. Lastly we know from writing about the trials that Anne had told Jane that the king was no good in bed and that somehow George had been aware of that conversation.
The idea that Jane was responsible for betraying the Boleyns did not come about till the reign of Elizabeth when writers, while trying to defend Anne Boleyn the mother of the queen, scrambled to find a scapegoat for Anne's murder instead of placing the blame on Henry, Elizabeth's father. The first two people to point their fingers at Jane were John Foxe and George Wyatt (grandson of Thomas Wyatt)
I love this picture by the way. Joanne King's performance, though horribly inaccurate, was also very intriguing and my favorite Jane to date. And this picture is gorgeous.