Here is a solution to any fear she might have, provided her parents agree- You might want to tell her to sit next to a mom type person (there should be plenty on a filght to Orlando) and her family.
There was a girl on the way back from Tampa to KC one year who was 9 who sat across the aisle from my family and her eyes were huge saucers from the time she got on the plane, so we chatted with her and she told us about her stay with her uncle and how she was going home. After take off I saw big tears rolling down that poor girls face and so we put my DD on my lap and my DH was holding DS and we moved her next to me and I offered to hold her hand, she took me up on that offer the entire three hours home! Poor girl had to get back to her seat for landing, but I hope I helped her. She pointed me out to her parents anyway.
My point was that I did watch her get off the plane to be sure she got with the correct people. I think most mom types would do that. The stewardess did escort her too, I am just overprotective of other peoples children too! DD just said "You got that right!". Smart aleck.