Thanks for sharing your story. I’m sorry that you have had such a tough time supporting your wife over the last 15 years.
Please contact us at Icarus Trust if you would like some help. We are a charity that supports people going through what you are, living with addiction in the family. We have trained and experienced people that you could talk with and maybe that will help you to know what to do next.
You can contact Icarus Trust on help@icarustrust.org or visit our website http://www.icarustrust.org
Good luck.