Whoa, so sorry you’re going through this. My answer comes from a perspective of multiple family crises over the years, involving sudden death, terminal illnesses and mental breakdowns, fortunately not all at once.
Here’s what I think, but at the end of the day you have to do what is best for *you*.
You’re probably going to hate me but … Let go of terms like “enabler” if you possibly can. It’s really satisfying to name the problem, but you’re going to have to find a way to get your mom to see the two of you as a team and putting psychological terms on her isn’t always helpful with that.
Also, is she really enabling? She sounds like she might be an overwhelmed person who has just given up.
A true enabler is very invested in the situation continuing because they get some sort of emotional payoff from it. The overwhelmed person would take help if they could be convinced that it’s possible to make a difference in their situation. The trouble is, they’ve gone so long without anything ever getting better that it’s tough to convince them things could change.
I agree you should start with your dad’s neurologist. Try asking for a consultation yourself to discuss your concerns about your dad. It would be ideal if you went with your mom, as it is possible that privacy concerns might prevent the doctor from totally confiding in you alone. But ask him yourself about your concerns even if your mom won’t go.
It is very tough to witness a situation like this when you’re not directly in the driver’s seat. Is there a Parkinson’s support group in your area? Or even one for families of people with depression? You could really benefit from connecting with other people facing similar situations.
I can’t stress enough the importance of trying to see everyone as a potential member of the team, however much their behavior is absolutely infuriating. In my experience, it’s impossible to get any traction when the people at the epicenter of the problem see you as judging them from the outside. (I.E., “You don’t really LIVE with this, you don’t understand!”) I’m not saying this is true in your case – I’m just saying that *if* you get perceived that way, it’s that much harder to help people. It’s really hard sometimes but you have to approach everything from a context of sympathy, not frustration.
I really feel for you and wish you all the best.