Hey Irish Dad
I was your daughter once, but my drug of choice was alcohol. How I wish my parents cared enough to seek help for me, or to assure me of their love for me, no matter
what. You and your wife sound like loving and terrific parents. I echo the advice
given above. Do your best to get her to the addictions counsellor, but she may not
believe she needs help, and until she decides this, there's not much you can do.
Al Anon or Nar Anon will very likely be able to provide the support that you need.
God Bless all the best to you and your family.
Rowan