Sending a welcome hug
That is such a young age to lose your mum :-( . I lost my dad at 59, and that felt too young.
I have found talking with my younger sister has helped me, so trying to keep communication channels open with your siblings may help them. We all deal with grief our own individual ways, so it can seem difficult and can put strain on relationships for a while. Be gentle with yourself, it is a painful time
For your worry regarding drink, i dont know iif there is a genetic link, but there is a possibility of a learned behaviour link I guess. To an extent we learn how to deal with life from our parents.
But you are conscious of it, and you saw the difficulties. I'm sure with exploring other coping mechanisms, including reaching out and talking with others, that will help to avoid it becoming an issue. We are all individual. And I'm sure many of us have used drink now and again during painful periods
For your youngest brother, does the college offer any counselling services? Just wondering if there is any support he can access there, knowing exams are stressful
And you never need to apologise for going on, there is no limit to the size of the post and you will find caring listening ears here xx