I feel very sad reading the horrible situation you are in facing losing your family for your partner. a horrible choice to make. I work for a charity called Icarus Trust. we offer support to people who are dealing with the impact of a family member’s addiction as we know this is so hard to cope with. If you get in touch one of our Family friends, our trained and experienced people would listen to you and talking with them might help you to find a way forward.
You can contact Icarus Trust on help@icarustrust.org or visit our website http://www.icarustrust.org
All the best to you.