Hi Nees,
There are support networks for people in your position – the families – not just the addicts. The Icarus Trust is an organisation which provides free Family Friends for you to speak to, along with a signposting service for local help should you want it. You can drop them an email on info@icarustrust.org or check out their website http://www.icarustrust.org.
I hope this is something for you!