It's just a thought, but one thing to possibly consider is they make these little capsules for carrying nitroglycerine (For heart problems) in these nicely decorated little containers you wear around your neck. I used to have one I intended to put the ashes of my bird in when he died, but it never happened. (At the time he was the only one in the world aside from my mother who loved me)
What about putting just a tiny bit of the ashes in one of those and wear it with you?
I still cry for you when I think about this. Especially seeing that tiny little hand. It's not something you are her deserved. But I am certain in my heart of hearts that her soul is with you every waking moment of your lives. She's still there, you just can't see her. Maybe one day you can feel her presance.