Seniora Flake and Shake

Since my friendship began with Seniora Flake and Shake when I was 19, I have been totally confused about where we really stood. Maybe I am needy. Maybe I am extra. But I like to know where I stand with all the people in my life, not just males I'm romantically interested in and to be honest, since the beginning, my friendship with Seniora Flake and Shake has been an It's Complicated situation.
Even as college sophomores, she had a way of taking me on and off the shelf when she needed someone to confide in. And I guess that was cool with me because I thought that she was cool and at 19, everyone in your life is shakey. Her life was a series of romantic dramas and nightmares that was juicy and dramatic to a gal like me that spent her Saturday nights in the dorm listening to old Outkast CDs. Throughout our 20s, it got worse. I would only hear from her when she needed advice or a secret kept. And that transitioned to me not hearing from her for months at a time, only to get a call randomly as if no time had passed. I never called her on it because I was happy to hear that she was alive. Seniora liked to party.
Three years ago things really got bad. I got a new phone and sent out a Facebook group message requesting all my friends' numbers. She left the group. I then sent her a private message, and she did not respond. Months later, I got her number from a mutual friend as to text her and ask for her email address to send her an invite to my birthday party. She responded with an attitude so I gave her some space and kept her invite to herself. She had gone from shakey and flakey to completely absent. Although she had always been touch and go, she could be a good friend at times. She donated money to my project of trying to stay in my apartment after I lost my job. That's a good friend, right?
The icing on the cake was when I messaged her after my mom died and her whole attitude was that of a woman that couldn't be bothered. I was shocked, seeing that she's a shrink!
That was a year ago. Last week, she hit me up on Facebook to give me tickets to a play she can't make it to. No cost. She just thought I'd like it.
If I had her number, I would call her and ask simply and gently WHAT THE HELL ARE WE? I mean, we can't be friends, can we? Were we ever? I found myself meditating yesterday about where the ball dropped with us and, I dare say, that there was never a ball to begin with. I'm no longer 19. I need stability in all my relationships. I need reasoning. I need to be able to talk things out when they go south. But there is also a time when you have to realize you have been friend dumped and move on. I'm not sure how to feel. I will let you know after the play.