Hi Kristin,
Compassion is that thing which gets me, too - when I see it in my children, it's as if they're acting with a Higher Source, with God, in their corner.  I recall a bird that crashed into our window, and my daughter and younger son took this bird into their care, to protect and care for him until he was ready to fly again.  And in it - I saw that they "get" that life is precious.  And then I wonder what I would have done, had I saw this bird crash?  If I'd have been rushing out the door?  Would I have cared as much?  Honestly, I don't know...  What I do know is that it warmed my heart.  A simple act of love...

What your girls have done IS a reflection of how you've brought them up, even if you don't always see that.  Kids learn from the actions they see...and that's you, Kristin...  

And as hard as it can be, you shouldn't feel stupid at all for not being able to do something (and I've been there myself too...more often than I want to admit).  You are "you", and that's pretty special just that way...