Hi Prophet,
Welcome to SR....Grand group here. Lots of love and shoulders for your support.
The first thing that you need to do in order to help your ex, is to start going to alanon meetings. You don't need to get caught up in her disease. You've got enough going on at the present time.
You'll get an education on addiction, how to live with it if that's the case and how to support them in times of recovery and slips.
So, basically, there is nothing you can do for her. It's all up to her. You can support her, but you can't force her to maintain her sobriety. Lend an ear, a shoulder and a hand. Doesn't sound like a lot, but that's the way it goes.
Blessings, gelfling