Perhaps some kind of training role might be an interesting career path.
I have often found my meagre teaching experience, and my language skills (degree in French) have stood me in good stead when called on to take training sessions.
Some large companies, or specialist consultancies would be worth talking to.
Not sure if there are qualifications she could obtain, but worth a thought.
The world of technical writing is also not too far removed for a good linguist.
Translation is an option, but does require further qualifications and training to be able to compete with the professionals.