firstly hugs to you and your family.

I think Rachel said everything i was going to. I was nearly 6 when my papa passed away and my parents told me the truth and i cried every morning for a month cause i missed him so much. Mum and i would look at old photos and talk about how much we enjoyed his company, this made me focus on the good times and not his passing. I still get upset about it now

So it may be really hard seeing her upset but it will get better. Let her grieve properly and give her lots of cuddles.

Good luck xx