I'm confused about your relationship now. After you had a bad dream, you would call someone you are currently in a relationship with; you wouldn't normally call your ex.

I think you and she need to have a discussion about the boundaries of your relationship, and be clear on whether you want to remain friends or restart your romantic relationship. Right now, it seems like she might be trying to manipulate you by making you think there is the possibility of the two of you getting back together.