I (30M) have a 6-year-old daughter.
I’m not biologically related to her at all.
No, she isn’t my biological daughter, and no, there isn’t any blood relation between us.
Before anyone jumps to conclusions, there’s a reason for that.
I was friends with her mother for most of my childhood. We were never romantically involved. She eventually married someone else, and together they had Lily.
When Lily was only about three months old, both of her parents were killed in a workplace shooting. I won’t go into too much detail out of respect for their privacy, but they both worked in the same building and neither of them made it.
Neither of them had siblings, and both came from pretty dysfunctional families. There really wasn’t anyone who could step in and raise Lily.
I wasn’t even sure I wanted kids, but I couldn’t stand the thought of her ending up in foster care. I’d known and loved her parents for years, so I adopted her.
She’s been my daughter ever since.
My parents and siblings have always known she was adopted. Lily knows too. I’ve never hidden it from her. She knows her biological parents died when she was a baby, although I’ve saved the full story for when she’s older.
Lily looks nothing like me. She looks almost identical to both of her biological parents. Most people assume she’s my biological daughter who just takes after her mom, and I usually don’t bother correcting them because it doesn’t really matter.
My brother has been with his fiancée for about two years.
A few weeks ago we were at my parents’ house when she noticed an old photo of me standing with Lily’s biological parents. She asked who they were, so I explained that the woman was Lily’s mom.
She got really quiet after that, but I didn’t think much of it.
A little while later she secretly got a DNA test done on Lily using my brother’s DNA.
When the results came back, she marched over to me in front of my daughter, waved the paperwork in my face, and announced that I was raising a dead woman’s affair baby.
I just stared at her for a few seconds before I burst out laughing.
I told her I already knew Lily wasn’t biologically mine because I’d adopted her years ago.
She turned bright red and stormed off.
Now my brother says I embarrassed his fiancée and should apologize. I told him she embarrassed herself by secretly DNA testing a child that wasn’t hers and accusing a dead woman of cheating in front of my daughter.
I honestly don’t understand what outcome she expected. Did she think I was suddenly going to stop being Lily’s dad because we don’t share DNA?
AITAH?