Reading your post I can feel the hurt & worry you are conveying..Its so hard to watch some-one you truly love destroy their life and not being able to do anything to fix/save them. You are trying your hardest to support and do anything you can to save your wife & marriage..I get that, I really do. However, look what your putting yourself through to achieve the impossible because unfortunately until she is ready to stop then she will drink.
Hiding bottles..she will never admit, she will lie till shes blue on the face that it has nothing to do with her. I am sorry for what you are going through but you have to remember this is affecting you too..your health & sanity. Al-anon is a good start to help get some understanding and support for you. Stay strong, stay safe. Keep posting & reading, there is a lot of support for you here.
Remember...this is NOT your fault