Talking to her about making choices won't work. She's admitted that she's confused at heck. Generally the MLCer will take the road of least resistance, which means...she may very well say it's over.
The best thing you can do is learn to live your life for you at the moment. Leave her to her nonsense and allow her time to figure herself out. She can't do that if you are putting pressure on her. I know you want answers yesterday...but you aren't going to get the answers you want right now.
Start living your life and do things w/o her in them. If she truly wants to be w/you, she will find a way to do so. She is a roommate at the moment...she fired you as her husband. Expectations are going to make you frustrated and angry...she has nothing to give you at the moment but false words and stringing you along because she honestly does not know what she wants on any given day when it comes to a relationship w/you. Remember...this is her journey to self discovery. You were not invited on that journey, but someone left at the shore watching her travel across the sea to self discovery.
Keep the focus on YOU!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.