Decision was taken from me. Please respond!

Hi, As you can see in my previous posts, I'm currently in the middle of reunion with my family. I only told that to my adoptive mum, adoptive cousin(like a sister to me) and my partner. I told them to not share this with anyone yet.. obviously.

And I just called my AM and she told me that she couldn't anymore and she told my adoptive aunt, once, their daughters and their spouses.... WTF.. I'm literally on my way to my BM grave. She took the decision from me, I told the that again she made everything about herself and it isn't. Now everybody will know... I wanted to see how the reunion will go and then tell them myself, to see the response and have it as something special.

I told her that I don't trust her anymore, and I regret telling her anything.

Sorry for any mistake, I can't see because of the tears.

Please can anyone understand me?