You gave Charlotte a love for the ages. It must have been so hard, but what a beautiful gift beyond measure. To love someone until the end of their life. It's what we all want, when we promise "till death do us part". We all hope death is a lot further away than it was for Charlotte. But you really lived that mentality. I admire that.
I would do the same for my partner. I was there for him after a psychotic break caused by a bad trip on mushrooms (possibly laced with bath salts) landed him in prison for manslaughter, when I had to testify for him in court, when delusions and grief caused him to become suicidal for almost 2 years, when COVID lockdowns made him unable to call me and I wrote letters to him every day for months...
It was awful and anxiety inducing, and very sad.
But now I know, that when I promised to him I would be there for better or worse, that I really would. I know what I am capable of doing, for love. I am stronger. And now, he's recovered. 6 years later, he's still in prison and will likely be in prison for years to come, but he came out the other side of his mental health crisis, he's stronger too, and able to be happy now.
Everything was worth it, because he's still here. He's alive. He's happy. And so am I. We have a meaningful life and a beautiful love.