My husband and I have suspected that our sister-in-law may have a drink problem for a while because now and then she has arrived at family occasions/cinema etc slurring and appearing not quite right. We'd hoped it was not a big problem and I was wondering if she had an illness. We were deluding ourselves because my husband's brother has finally confided in him that he cannot cope any more. Whenever he comes in from work she is drunk. She is self employed and he isn't even sure how much she is working. Don't know what to do. We are sworn to secrecy so cannot ask advice in the real world. Cannot tell most of my friends why I have been so preoccupied (one though pulled me aside some weeks ago and said she was worried about sister-in-law). I know there are no quick fixes but what on earth do we do? It is so lonely for brother in law and miserable for my wonderful, kind but clearly unhappy sister in law.