Replying to Grom ski for my little sister

Alright all you little groms, and those who have a vast knowledge of the youth skis out there, I ask for your help.

Now, I've done a little research, but I need more help. My family (and I) are looking for some skis for my little sister. She is 11, about 100 lbs, and probably 4'9"??? (I never see her seeing as I don't live at home anymore).
She is currently in the Nancy Greene racing program, and has set skis for that. She needs something bigger with more girth though. My family lives on Golden, BC. So naturally, the ski hill is Kicking Horse. So I would say, 80/20 all mountain/big mountain. Her current model is a pair of 145 Line Celebrity. Which are become lifeless and short.

We've come to the conclusion that she needs a ski at about 155cm (+/- 5cm). With a waist varying from 95-110mm.

What my parents have looked it:
Salomon Giesha at 153 cm.
and a pair of Moment skis that her friend has (but wants to get czars instead, so he will sell them), but wants to sell. I don't know the exact model, and my research has come out with nothing.

For the options I have looked at,
Surface Next Life at 160
Line Celebrity 100 at 158
Moment Pika at 150
K2 MissBehaved at 149 or 159
Line EP Shorty at 155

Sorry for right a lot whole, I tend to add detail.
Your input would be great help. Hopefully I didn't forget anything

CHEERS!