My SIL Did a DNA Test for My Daughter Behind My Back — When I Learned Her Reason for This, I Went Low Contact with My Brother

“You must have been very close,” Isabel pressed, something in her tone making me uncomfortable.

“They were family. Not by blood, but the kind you choose.”

What I didn’t notice then was how Isabel’s eyes narrowed slightly as she pulled out her phone later that evening to make a quiet call in the hallway.

I should have seen it coming.

I should have known she would go to any length to test my daughter’s paternity behind my back.

“I knew something was off,” Isabel spat when I confronted her later. “Ava looks nothing like you! Then I saw that picture, and I KNEW she wasn’t yours.

And if she wasn’t yours, she had to be a —”

I cut her off. “An affair baby? Are you serious?”

She folded her arms, chin up like she was still sure she had this all figured out.

“You never said she wasn’t biologically yours.”

“I never said she was, either. Because it’s none of your damn business.”

She flinched at that but recovered quickly. “I just didn’t want you raising another man’s child thinking she was yours.”

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