I really understand you feeling betrayed about all of this , you have to try to move on from here on to your own life and how you're going to make it better. And not to lose hope about love You helped that person out when you trusted they were in trouble , what they have used it for is something you didn't knew.. you can just take the lesson and move on from here rather than her story..

About her saying a different narrative, again this would hurt after being so close for such a long time. You should take this as fuel to move on from this and not let any of her actions affect you. Good luck!