OK it's not exactly staff member, it's a volunteer.
I've only known her for about a year, she seems to be managing what she does reasonably OK, but she's been a bit erratic about things, particularly communication. She's very enthusiastic, but goes AWOL from time to time. One of her fellow volunteers fell out with her and rang me complaining about her. Her behaviour from my angle fits in perfectly with a binge drinker, but I'm acutely aware of binge drinking, having been involved with alcoholics all my life, so I realise I could be being paranoid.
I don't know if should do/ say anything about this. Or just let sleeping dogs lie and hope that either I'm wrong, or that if she is a binge drinker, it won't have any effect on her volunteering!
Opinions? thanks