She acts as if everything in her life is 'peachy keen' [='peachy'], but I don't think she's really happy.
She has a 'keen ear' for languages. [=she is able to easily learn and understand languages]
She had a 'keen' awareness of what was happening. [=she knew exactly what was happening]
(..) (gasping) Please tell His High Holiness he's always welcome to visit. (men shouting) Looks like a siege, my lady. You have a keen military mind, Pod. My lady. My lady. Who goes there?! State your business! My name is Brienne of Tarth. (..)2016 TvShow: Game of Thrones Title: No One Season: 6 Episode 8