Oh Mel, what sad news.
I lost my dad in 1993 - and it may as well have been this morning. There is not enough time to take the pain away - you just get better at hiding it.

My dad he was my hero, and he probably was hers too. If your friend adored her father, she is in an unimaginable amount of pain right now, and all you can do is be there for her, for whatever she needs. Nothing you can say or do, will really make her feel any better - but just being there for her will help.
I feel for her. It was just the worst thing that has ever happened to me, and I am sure she feels completely and utterly lost.
Just hugs, and cuddles, and someone to help wipe the tears - and listen - stuff like that will comfort her. But it is the worst thing to ever go through. The worst. It change my life, completely.
Sorry to sound grim. I just know - for me - a father-daughter bond was something powerful and wonderful - and when its gone - well, not much anyone says or does can help. At least thats how it was for me.
Just be there by her side, and let her know you will help her however you can.
I am so sorry. It really is a life altering thing, what she is going through.
xxx