For getting all the copies of Vine, I'm not sure if this applies for her but the wind SR in the shop restocked for me a while back and it was even free or extremely cheap. I have never gone back to farm those stages and didn't have any mats left to buy her in the first place if the added materials needed. I currently have her fully break limited, since I held onto her 3/4 break copy I had when I first started playing the game when there was only 3 copies. Though this was like a month ago.