I was disappointed in the ending. I had read a spoiler that she reunited with EJ on an island, he's not really dead, guess that wasn't true. Or maybe it will happen in the future. The door is definitely open for her return, I'm willing to bet she does. Most of the leading people who were on the show 25 years ago have left and returned at some point.
I read in an interview that she said she would come back: http://www.inquisitr.com/1576205/da...son-sweeney-gone-but-sami-brady-could-return/
I saw somewhere else that she was already planning her return for the 50th anniversary next year.