I understand to some extent. We often in life have events that shock or unsettle us. Maybe you're still grieving for the loss of the parents you remember. Coming to terms with who they actually are now.

Politics is ugly and not nice right now. The world may feel a lot safer than it once was. It is out of our hands. We just have to learn to operate in that new world. We have to focus on the things we can control and make the best decisions we can in the circumstances. Are you in contact with the parent that left? Is there no possibility for you to live with that parent if you connect with them better. It could be that they left their spouse, not you.

Focus on the things in life you enjoy. It may not be everything but those moments of joy can give us energy during harder times.

I cannot really comment on the therapist situation. I don't know if there is a real risk to you and you cannot go into it. Trust is important in therapy, so that could be tricky.

As you are a young adult, maybe focus on your future, your life, what you want your life to be and think of what steps you need to take and what decisions you need to make to start heading down that path. You have agency and many choices in that so you can hopefully feel power in your control of that.

Forgive yourself that you feel unsettled though. It is normal and natural for things to affect us in life and it takes time to process it and move on. Allow yourself slack to be able to do that in your time.

Oh, and your parent is responsible for the decisions they make and the choice to listen. It may feel good for them to blame the other. Maybe they saw who this person was long ago and just could not continue with it.