"A few days ago, I asked her again what she intends to do as far as seeking help. "
With all due respect, this really isn't your business. That may sound harsh, but it's the truth with addiction. If she is your Ex, then her plan for seeking help is her business and not yours. If she wants to see a psychiatrist, then that's her choice. You may not feel it's the path she should take, but you're not directing her recovery plan.
The best, most loving thing you can do is step back. You can't set boundaries for her ie there will be no drinking prior to and during your meetups. That is control. You can set a boundary for you however. If she is drinking when we meet, I will get in the car and leave. That is about your actions, not hers.
Consider finding an AlAnon group and attend some meetings. You will get a lot of support in working through those co-dependent issues that keep our focus where it doesn't have any power...on the A.