yorkiegirl Please contact the Child Berevement Trust as suggested by mears.
They really are a fantastic organisation.
Not only do they help Parents(like myself) who've lost a child, but they also help children who've lost a parent.
Give them a call, you won't regret it.
They will have lots of suggestions to help you to support your daughters, as well as to help yourself.
Also help her to make the memory box that was suggested by psychomum.
I made one when i lost my son and it helped me so much.
You could even give her one of her Daddys favourite tops to cuddle in bed.
Or you could stitch one upand make it into a cushion, get her to help.
Most important is to let her talk as much as she wants to.
Also, children often speak through pictures, so you could get her to draw as much as she wants.
Hope this helps in some small way.
Take care.