First, you should look for vital signs that show that she may have a problem such as:
Repeated lateness or absences
Poor work performance
Neglect of children Uncharacteristic mood or personality changes
Other physical signs may include
Loss of sense of smell
Drowsiness or loss of coordination
Alcohol related smells on breath
Alcohol related paraphernalia (Beer bottles, wine bottles, etc
Vitamins ? Let me know if I'm right :) hope this helps some !
