>>2250374Her loneliness and past were explored (if you could call it so) prior to her death and could have been further revealed if it wasn't for it. Needless to say, dying so early, with so little development and her death in itself being an important plot point are reasons why some people disregard her character as a "plot device".
Honestly, if it wasn't for the spin-offs where she actually gets the spotlight role she deserves, I probably wouldn't like her as much as I do.