This children's novel was from around the 1970s or early 1980s.

Chris changes shape to fit into each realm. The guards follow her each time. She later finds she is a clone of the scientist Christine, who went through a double ring.

  • Do you have anymore details you could edit in? Any plot elements? Memorable scenes? What the cover looked like? etc.
    – TheLethalCarrot
    Sep 12, 2018 at 8:36
  • Spaceling by Doris Pischeria? The ability to see other-dimensional rings that float in Earth's atmosphere was a late mutation of a few space-age humans. Daryl was under the care of the institution for muters, and she had discovered that if you jumped through the right ring at the right time it would land you in another dimensional world and another shape.
    – sueelleker
    Sep 12, 2018 at 17:55
  • @sueeIleker: I agree with Doris Piserchia's Spaceling - I also immediately thought about it. You should expand it into a full answer. Sep 13, 2018 at 8:32
  • Can you expand it for me? I'm not sure how to do it.
    – sueelleker
    Sep 13, 2018 at 17:00
  • If Spaceling is correct, this can be closed as a duplicate of scifi.stackexchange.com/questions/33634/…
    – Otis
    Sep 14, 2018 at 1:29


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