She is 5'2" , 140 lbs. size 6.5 boot
I was looking at picking her up a Nitro Lectra 149 cm
149 might be a little big for her first board. It will be a lot more stable but I would shoot for a 147..
I started my wife on a shorter board (146) then put her on a 149 that shes on now and that seemed to help alot. Shes 5'6" 150
The board i have is a O-matic Disco.. 150