Hi
You sound like a really strong support for your girlfriend, who has obviously had such a very tough life, as well as her children. It’s good that she is beginning to access therapy from the NHS but I’m sorry that you are in such a difficult situation and have no one who can support you.
I work for a charity called The Icarus Trust that provides support for families and friends of people with addictive behaviours. We know that this is very difficult so we provide a service called ‘Family Friends’. These are a team of trained and experienced people that you could talk with if you make contact with us. They may help you to understand what is happening, to answer some of your questions, help and signpost you to what other help is available.
You can contact us on help@icarustrust.org or visit the website http://www.icarustrust.org
I hope that this helps and that you are able to get some support. Good luck.