Just keep the mentality of "I'm happy with or without you". Her loss. I'm sure she will sense it.
Everything is a test. The worse thing you could do is when she is being nice to you is to open up and go melty man on her. Always walk away leaving her questioning why; and hopefully, eventually, she will be left wanting more. Confidence and strength in your actions, ALWAYS.
Your strength and conviction of moving on with your life will pay off for you and she might just come running back. You never know. My suggestion, don't worry to much what she might be looking for. That's wasted mental energy and saps your self worth. Easier said than done, just a reminder.
