what I realized this morning is that I am married to someone who is actually mentally il
Now if this is true and it is a permanent disease you must look at your R past and present thru different eyes. MLC is not a mental illness. The depression associated with MLC is the mental illness.
My mother(77) is bipolar for 55 years maybe more. She has been medicated for maybe 40 years. It doesn't always help. So what I am trying to say is you need to evaluate the degree of the mental illness to see where YOU want to go.
But the detach/NC is the best thing for you in the long run.
KJ and Cat gave you good advice, listen, read and understand.