Why can’t family keep secrets??

My husband and I only told our immediate families that we’re expecting. Then my aunt came over one day while we were all talking about it so I told her, but also mentioned that it was still a secret. SHE TOLD EVERYONE. Her children, all of my aunts and uncles. EVERYONE. Then denied it when I approached her about it, even though everyone said they heard it from her. She doesn’t even see anything wrong with her actions, “why hold back good news?”

She’s also friends with a lot of my friends moms and I’m so scared she’s going to tell them and they’ll tell my friends before I even have the chance too but I am still not comfortable beating her to the punch.

I don’t know what to do but I’m livid. It was my husband and me’s news to share. I’m not even in my second trimester yet.