I am new to this platform, still learning (and this is my first post here!), but adoption is dear to my heart. My great grandmother's adoption was one of the reasons I decided to do DNA (as well as my grandmother's, ggmother's daughter out of wedlock birth). I already had my theory and I wanted to prove it. I have another brick wall that still remains a brick wall that has nothing to do with adoption (that I am aware of--and within the autosomal realm). As a mom and wife of adoptees I will say that people process it (the info) all differently. You handled it perfectly. I tend to overshare because I want the person to know, but I will also allow for an open door if they want more information.
All that said, I was actually upset about my great grandmother's adoption when I found out the DNA facts (it only took me about an hour to triangulate, if that). The family story that had been passed down was only partially correct. The truth was she was placed at abt 6mos, an older brother (1yr older) was not, and the parents went on to have three more children. I've reached out to family (would be grand children, 3 people) to find out if they had heard any stories, but I haven't heard anything back. They may not be alive now, who knows with Ancestry. I think I've gone through the stages of grief for her! (it seems silly, I know).
So, offer what you can to fill in blanks. Pictures, occupations, hobbies if known, all the things that genealogists enjoy knowing about our ancestors.