Your wife has proven to be deceptive and unpredictable. You can’t have a healthy relationship with someone who can be nice sometimes and then distant and secretive at other times. Not to mention the fact that your wife abuses alcohol and even your own children don’t feel safe with her.
It takes time to fully accept that a person we wanted to love and trust is not the person we married. You have gained some ground yet there are times when these uncertain feelings will come up. Lots of people miss the red flags that a person they thought they could love and feel safe with turns out to reject and hurt.