Am I in the wrong?

My MIL is a sweetheart, don’t get me wrong. But this is a mini vent.

The other day we had a family gathering and I was sad because of personal reasons. I didn’t want to get into it with her, I only shared details with my husband. I confide him and feel like I can be open with him the most.

A few days later she had asked me if I was okay that night and I told her I was alright, just a little sad from family drama. I didn’t get too into detail, just general stuff but I’m okay.

I find out a week later that she had gone to my husband to ask why I was sad and what was going on with me. He told her and gave more details, and she had some things to tell him that kind of upset me.

I guess I’m feeling like if I don’t want her to know intimate details, it’s going to be told to her anyway.

She asks because she cares, and I appreciate it. But sometimes I don’t necessarily feel comfortable with her knowing every detail about me. And my husband and I discussed this.

Is that wrong? Am I in the wrong?