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]
(..) Excuse me. Sorry. Sorry. Sorry about the peanuts. It's been a good one, Santi. The coach sends his apologies for not coming to greet you but I know he's very keen to see you. Please! What is he doing? Warm up. Welcome to Norway. - Not such a great day, son. - Hey. (..)2007 Goal II: Living the Dream