Raine was hoping that Mara already had enough knowledge about supernatural things even if it was through myths just so that it would be easier for her to explain things further. Fortunately, based on the reports, her twin had a very exceptional level of intelligence. Also, Keira had made sure that her sister knew how to protect herself, which meant that she was also well-trained in physical fighting.
Thinking about it, Raine found herself thinking of ways how to show her gratitude to Keira and her husband Zach, who was now currently the Field Marshall for Country D. They had provided her twin sister with everything she could ever need and even made sure that Mara was well prepared to face the outside world in all of its aspects.