Game of Thrones Season 6 Episode 04 Book of the Stranger
In Winterfell, Osha is brought before Ramsay, who asks her why she was helping Rickon. Osha claims that she intended to betray Rickon and attempts to seduce Ramsay while reaching for a nearby knife. However, Ramsay indicates that he is aware Osha used a similar ruse to escape Theon. Realizing this, she tries to stab him, but he quickly slashes her in the neck with another knife, killing her.
RAMSAY: You’re a good talker. I like that. You’re a much better talker than Theon Greyjoy.
OSHA: That so?
RAMSAY: I had to work hard to get him talking. But he talked. They all do. He told me everything. All about the Stark boys, who helped them escape, and how she did it.