[audi2.7t]

Having lost my younger brother recently I can only try to relay to you what I see in hindsight... life is short, family is precious (even slightly dysfunctional ones) and good friends are worth keeping. In retrospect, I would have done a lot of things differently with my brother, lectured him less, been more patient and understanding and supportive of his choices in life. Be glad that you are in the position to help your sibling, by no means am I saying "give her a free ride" but understand that her priorities are different to yours right now, give her chores to do, token rent to pay etc. but don't be so hard when they don't happen, shrug it off and remember all the advice you ignored when you were younger. She sounds like a hard worker in areas that are important to her right now so help her anyway you can, we only get one shot at this and things that seem important now will be a lot less so down the road.. also, make sure you tell her how much she means to you and no matter what happens you'll always be there for her.
good luck.

p.s.
My brother commited suicide after years of just not being able to catch the right break or take advantage of the breaks he was given or made for himself, he was 29.