Great suggestions! Thank you. For those of you who suggested not giving a book about gifted learners, what's your thinking? I am assuming she will have had a lot of classes on more "typical" learners.
A surprising number of highly-regarded education programs spend most of their course time on learning theory and social justice, and leave the practical skills training to teacher-mentors in their student teaching placements, which, of course, means it will be as good as the mentor. You would be amazed at what even experienced teachers are grateful to be introduced to as strategies.