Is she testing me to see if I've changed?

My ex after a year texted me we hungout. We had sex and talked and made up all was well. She said shed go to dinner with me monday. Sunday night she told me she might have to work late like my old self I flipped out. She said I haven't changed. A week went by and she texted me and said it doesn't make me wanna see you or think things will be different when you act like that. I apologized. 2 days went by. Yesterday I texted her a nice note basically asking for a chance to prove to her. She read it and didn't respond. 2pm today she texted me and said sorry I didn't read I fell asleep but I know she did read it because she has an iphone. I said don't worry what did you think. She said I'm not ready right now to decide after last week. I said give me a chance spend time with me I will prove it to you. She said i don't know Ill text you later I'm not even out until 2 am. My question is what should I do is she testing me to see I get mad when she doesn't respond or hangout should I just play it cool.

If i get this straight she said yeah we can go out monday for dinner then sunday she said i might have to work late on monday. So she might not be able to go out to dinner so you got mad she didn't like it i don't think its a test but it did seem that you got mad over something small unless she makes a habit of making and then canceling plans but either way you shoulda said thats cool just hit me up when you get out of work and maybe we can do something.