DEAR ABBY DEAR ABBY: My 47-year-old daughter is an alcoholic. A year ago, she took several benzodiazepine pills along with the booze and overdosed. My son-in-law found her in time and called 911. She spent five days in a psych hospital to detox, but never went to any follow-up rehab. I had been led to believe she was sober, but recently found out it was not true, and my son-in-law for some reason…