For most characters, I agree. But for that character? No way. She has been a key character for all 5 seasons prior to this, and her death wouldn't seem to serve any grand purpose (like, say, the deaths at the Red Wedding, which had a ripple effect across the storyline for everyone else). It would seem like the bulk of the time we followed her around was for naught. She will accomplish something very worthwhile in this story, I'm sure of it, though I can't fathom what it might be just yet. Maybe she will just be a great fighter on the battlefield in the war(s) to come. Or there was talk about a challenger to the Mountain. . .in either case, or others, you can have all of her experiences pay off.