For families and concerned others, I would suggest you go to a face to face meeting of NA (Narcotics Anonymous) family group called Nar-Anon, link: http://www.nar-anon.org/naranon/
They have great experience working with families/friends of substance abusers (gaming is a substance).
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Liz Woolley
Nar-anon meetings really are wonderful. I've gone to these meetings because of the substance abusers in my family, and they helped me a lot.
Good, Liz!
I totally recommend alanon or nar-anon.