In my opinion, if a bun is still trying their hardest to act like a bunny, eating, drinking, etc, then yes, they are trying their best to fight this. I have personal experience of a bun rolling and i know how distressing it is. Is she managing to right herself when she does roll?
Does she have head tilt?
My Kermit was young when he got head tilt, probably about 5 months, so a bit older, but still a baby. He was really bad to begin with, he couldn't even stand up without rolling, he basically lay on his side for a few days with me nursing him. Then he gradually started to get about his cage. I had to leave him when i went to work, it was not ideal, but i just packed the cage with towels and left him loads to eat and drink.