Hi HallelujahHall
Welcome to the bpdfamily
I'm sorry that you've had to get here but also glad you are here as parents we are experiencing many of the same issues, challenges. I'm sorry your daughter is self harming at such a tender age, i'm sure you are filled with so much worry.
Can I say that your wife and daughter are very lucky to have you, no doubt 18 years of marriage living with BPD cannot have been easy for any of you and I commend you in being here.
Personally I don't have experience with therapy. My D27 was diagnosed three years ago and is high functioning and denies her diagnosis. I have been cut off after a rage since January this year and am unable to reach her through validation techniques.
I have been reading a number of books. Sepcifically, "I hate your don't leave me" makes reference to the varying range of options available for treatment. There is no one size fits all and it is about finding the best fit for you. I know many parents here will be able to provide you guidance in this regard as well. Which country are you in?
As for learning there is plenty helpful information to the right
Are you able to share a little more of what has been happening for you? How are you coping?
We look forward to hearing from you.
Take care of yourself
Merlot