As I reread my post and responses, they sounded just the way I felt; bitter, angry, why me/us, this so unfair, my life is a swirling vortex of a dd with BPD, we have so much more pain than the average couple /family... .it wasn't supposed to be like this.
I'm preaching to the choir

.
The truth is that there are some very bad moments in days that seem ok, and there can be very bad moments in days that are full of stress and conflicts - there does not appear on the outside to be any correlation. In those moments, my dd's state of fear and panic is so great that the BPD kicks into high gear and generates what always feels like a state of emergency.
Unfortunately, I/we don't always react with a calm demeanor. Well, we are being attacked after all. It's normal to scream at someone who is screaming at you.
Except, if at all possible, don't.
And things have changed for the better with our dd because we had some time apart - she is an adult and we try not to treat her like a child even when she acts like one. But I'm not sure if or when she will ever be a grown up... .because that takes confidence and... .above all, compassion.
I will say that my dd's attitude and general frame of mind IS more mature than when she was a teenager. What I mean is that because of her experiences and her daughter, she feels like she has a reason to live a "normalish" lifestyle, complete with very judgmental attitudes about horrible things she used to do that she now sees as "stupid teenage actions of a long time ago".
We have had discussions that get very close to touching the most difficult parts of her adolescence, and in those moments I ask some questions with no inference of judgement or personal pain. She admits she did crazy things. But she will not go so far as to connect many consequences to her actions. And she will say we still abused her.
DBT taught me to do this type of inquiry... .it especially helped to understand that my dd's anxiety levels start at a 5 when she wakes up in the morning and if there is a crisis it spikes to a 9 but then never comes down past a 7... .when the rest of us start at a 1 and go to a 6 and back down to a 1.
I call this ability my body double.
My basic nature is not calm, slow, compassionate, Mother Teresa. My basic nature is optimistic, competitive, type A, get it done, no whining, loud and yelling (thanks mom, I love you) and judgmental because I get paid to be. Most of us do.
I have also experienced loss and abandonment, so I like to control my environment. That meant I wanted to tighten the sphere of my world when she was exploding it. I tried to let her expand, to experiment, to find herself. She wanted to place blame so she could transfer her pain onto someone else. She caused pain and suffering beyond anything we ever could imagine.
I cannot go back there, to that place of unbelievable pain. So I use my body double to look at her outside my emotional self. I use my logic, my deductive reasoning, my research and my analytical side to try to see her and her world. It is as though she is a rat in a maze, and I am researching which bait she will go for, and what stresses will make her upset, so I can adjust the parameters of this experiment.
My body double provides entertainment as well - I watch as others meet my dd (who is drop dead gorgeous, has a great smile and sweet demeanor) and engage in her wonderful side, and think:
"You are like a moth to a flame... .just wait."
But now there is a conundrum, in the form of my granddaughter. I'm finding, also because of age, that my body double has to be on most of the time since there are times I have to protect her as well. So I wonder if my original self can feel the same things for her, or if my other self will prevent the feelings from getting stomped on all over again.
Has anyone been able to bridge this gap?
thx