This is the same
question where you ask anyone - how do you know you are doing the
right job/career?
What are the chances, in this Aquarian age of globalisation, where
your first job becomes your career and you work until you retire,
like Japanese companies back in the olden days as they termed it
life-time employment?
Why are you even asking 'if this girl is right? That girl is
right?' when
i) If you haven't got any clue for what you are seeking for.
ii) If you haven't got into a relationship with this woman
Don't ask if it's
right - ask if there's love. 
Cheers