I know that Louise does not fully understand that you are gone. What three year old can truly understand death? At 36, I still struggle with the concept. I am sure that as time goes on, she will grieve in different ways and at different stages.
Tonight, as I was putting her to bed, she said "I miss our Daddy so much!" Of course, I told her that I did too... very much and all the time. She said, "but he's in our hearts." I confirmed that... always. Then she seemed to struggle with what a heart actually was, again a difficult concept for a three year old. So she told me there was a picture of you in her tummy.
Makes perfect sense to me! And if that's so, I hope you're enjoying the wine and chocolate I'm sharing with your picture in my tummy right now.