heni, i hope your diab. son is better today. i have diab. too and it takes a lot to stay on course. thinking of you.
as for your mom i'd tell her her drinking can be a trigger for you to drink. i'd set a clear boundary with her or suggest she find another place to live. our sobriety must come first above all things they teach us including family. i balked at that but later understood what it meant. i had a functional alcoholic husband and when i decided to drink his beer was my source even tho i hated beer.
it sounds like about everyone is leaning on you. it's incredible. putting out everyone's fires will wear you down mentaly, emotionally and physically. there's a saying in AA-don't know if you go-it's called H.A.L.T. hungry, angry, lonely and tired. any or all of these components can lead us to a drink.
when i read all of your post i thought of erma bombeck's life. as an after thought your day was "amusing" just as she described her life. (you have BTW a gift of writing). but also overwhelming. you did a great job however to see the hysteria thru.
don't know how long you've been sober but you definitely need people and sometimes children to take some responsibillty of their own.
hope today is less hectic.