You should have a civil talk over coffee (or her favourite beverage) Let her know that you know she is an adult now but you have a few concerns for her as an older brother. Also let her in on "the Man's perspective" about her clothing and how you feel that she is selling herself cheap and you feel she is worth way more then that and deserves to be treated and pursued like a woman/princess. Be honest with how special she is to you and how much she means to you as your sister.
Be calm but still real and genuine about how you feel with how she has been acting and let her know it will bring nothing but hurt to her future and that is why you are telling her. Be genuine and as calm as possible when you tell her (don't yell or flip out). Best of Luck.
Considering it was your grandfather, I would venture a guess and say it was because he didn't drink very much water - he got too dehydrated and developed maybe high blood pressure. High blood pressure doesn't have symptom many times - that's why it's called "the silent killer".
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.