Thank you for these suggestions, Baldur. I haven't read all of the Foundation series and remember very little of what I did read, it was so long ago. I might have to look into them again. A couple of years ago I did read Donald Kingsbury's Psychohistorical Crisis ⚠️ ↗, which is a sequel of sorts and highly recommended. There is even a girl lover character in the book who is, for the most part, portrayed positively. He has a 12-year-old girlfriend. I've never read either of those works by Heinlein or Macdonald, although I think I once saw an animated version of the latter. I could've sworn I did anyway, though I may be thinking of something else. I don't remember much about it either. 14 is about the upper limit of girls I'm willing to draw, as it's the upper limit of my own AoA. I already mentioned Swan Prescott from McCammon's Swan Song--she appears in the novel at two ages primarily--age 9 and later at 14, or maybe it was 16. I might have to read it again. Now that I think about it, I think she was 16 in the second part of the book.