You don't like the ending written for her, so you seek to change it with the Holy Grail. There were many wishes like that.

But if you do that, what is the point? Can you say you'll be happy with that kind of conclusion? Your friends hating you, Pyrrha not liking it- Perhaps she would rather have been dead than to see you have blood on your hands like that? Will you not consider her feelings about this at all?