Just to add to this:
- she asks you about all your female friends on facebook
- she wants you to know about her exes and that she does not go out alone with any of them nor does she keep in touch, except at work
- even after she does a 36 hr night shift, she wants to spend X Mas eve counting down with you
Hmmm...based on the above, the word 'keen' is an understatement. She is madly in love with you! Congrats!