How I know she's mine

Dear Mom,
Often I feel like I am an outsider in my own home. In so many ways, our kids are very much like their Dad.
Every so often, though, something happens and I know part of me is in there somewhere. One of those somethings happened Friday evening.
The Young Lady was hit "in the eye" with a tetherball. And she didn't see it coming.
Yep, she's mine.
Love,
Kim