It really depends on what is going on with your teeth, why they were filed down, how they were filed down [on the flat surface you see when you smile, or the biting surface?], the level of deterioration between the filing & now, your diet etc!
It really is hard to say what it could be. If they were filed down on the biting surfaces, due to not being level, then not alot of tooth structure would have been taken away & it is highly unlikely to have caused further problems, ime. Natural grinding usually causes inconsistencies on the biting surface.
If they filed the flat surface you see when you smile, then again it would have been so minute an amount. If she had taken away all your enamel you would be in a hell of a lot of pain, believe me!
Wine is very acidic, it could be that it is causing a weakness in your enamel. Are you throwing up for any reason periodolically? The acid can cause enamel erosion. If you are brushing immediately after drinking wine/being sick you could literally be rubbing the acid into your teeth & wearing them away.
If it is enamel erosion you will have flat, non shiny surfaces, that will be yellowing. If it is not, your teeth will have a white shiny appearance, as per normal.
If it is the biting surfaces, could be that you are grinding, which imo, sounds like the most likely cause of a crack. Many cracks come to nothing, I have several that haven't progressed.
If you are grinding, NHS dentists are often reluctant to treat as they don't have enough expertise in the field of TMJ to reduce the problem sufficiently. Oh & it costs alot too!
Second opinion is def needed. Oh & if you do see a private dentist, make sure your NHS one OK with it, as some NHS dentists I know have refused to continue treating patients who see other dentists.