Welcome to SR
Yes you are right it is very very hard to watch someone you love behaving like this.
Hiding alcohol...
Stealing alcohol from her parent cupbourd ? Oh Dear
You know in your heart what is acceptable and what is not.
I hope your stick around here, read and learn.
We know wjhat it is like and the confusion that goes with it all.
Keep posting and connecting. you are not alone.
Remember
You didn't cause the drinking
You can't cure the drinking
You can't control the drinking