I really enjoyed the way Rand rode off  (would have been better with Bela  ) into the sunset type ending. Im sure he will seek out Tam, Mat, Perrin, etc. soon but for now he had to leave and let everyone think he had died so he could restart his life. One of the best parts of it though was when Cadsuane saw him it was perfect for her character and her interactions with Rand. They both knew it was for the best.

I think she is similar to Shadr Haran  except for the creator. She plants ideas in Aviendhas head and then she (presumably) appears after Rand defeats the Dark One. I think she initiated the body swap with power given to her by the creator similar to the true source but probably different. That was the creator rewarding Rand.