Bellatrix Black/Severus Snape
That was the real crux of it all. The choice. To be or not to be, she thought though unsure of where she had heard the line before. If she was to be honest, she'd wished that when she had switched into a younger form that her memories had disappeared as well. But that was not the case.
Instead she was teetering on the edge of being and not.
"I suppose you've a point there," she said while considering it carefully. "I wouldn't mind trying, but I doubt it would make much of a difference to anyone here. I am what I become, regardless of my actions. Not that I can't imagine myself becoming what you told me I did. Nonetheless, I will always be only that to everyone. It seems folly to bother to try otherwise."