Similar to what Sunnywindows said - position yourself to be there for her when she "lands" - both relationally and mentally.

You're up against a roadblock that you can't get through yourself. You've done what you can - and being there with a few in my family - I commend you for that.

I also understand how difficult (and ongoign) of a struggle it is to "pull back" on your desire to help someone you love see the truth.

Think of it this way - if you're pressing them into a corner - which by your conversations, it sounds like is the case - they are going to need some time and space to sort things out themselves and figure it out for themselves - because the corner press isn't working.

She'll come around.

The fact that she's "far left" and that you are here - and that you're able to have a conversation with her and after it you're not both hating each other - says a lot.

I know a lot of my long time friends who are very left, who would write me off if I shared everything you did the way you did.

Position yourself to be there to help her land.

If all of this is going to come out at some point - there are more precipices ahead of us still - which means, even though she's deep in her worldview and methods of coping right now, a precipice with her name on it may still be ahead (as I suspect with a lot of people) - the biggest precipices are still ahead.

Be ready to help her. You're doing good work!