Hi Leonie,
Thank you for posting. It is very hard what you are going through and it can feel very lonely if you have no one to talk with who understands what you are dealing with.
I work for The Icarus Trust which is a charity that offers support for the friends and families of addicts. It is a very hard choice that you are facing so perhaps talking with one of our trained and experienced people may help you to be able to come to a decision about what you do next.
You can contact us on help@icarustrust.org or visit the website http://www.icarustrust.org
Good luck with everything.