Hello Giovilela,
I want to join the others in welcoming you to the Parenting Board.

You came to the right place for the support you need to help you with your dear daughter (DD17). My DD is also 17, so I understand how exhausted you are! And I understand how sad and disappointed you must feel since she quit school. My DD17 was diagnosed with BPD after a cutting incident that landed her in the mental hospital for a 3-day hold. It was a very stressful time for our family. But, I am glad to finally have this diagnosis because NOW I finally know what my DD's problem is and I have already learned ways to help her AND help MYSELF in dealing with her.
I agree with NorthernGirl that a good place to start is by reading the article she gave you,
What Can A Parent Do. In addition to that, I have found the "TOOLS" and "LESSONS" to the right of this board to be very helpful... .especially the ones about Validating and S.E.T. I recommend you look at them too. -------------------------------------------------------------------------------->
I think you will find the other parents here to be very supportive and helpful. We are all dealing with similar issues, even though our children are different ages. A few young ones, several teens, and many adults. Please tell us more about the problems you are having with your DD17. The more you share, the more we can help.
One of my biggest challenges lately with my DD is she wants to move in with her boyfriend (BF) who lives halfway across the country. My dear husband (DH) and I are very worried that moving away will send her into a downward spiral of depression because she will be leaving everything and everyone she knows to live with a man she's only known for 6 months. She has stopped taking her medicine and she has been skipping her therapy appointments. So we are trying to let her go, knowing she will probably fall pretty hard. But, we are also hoping it will be a good learning experience for her.
What are your biggest challenges with your DD17? This is a difficult enough age for parents without BPD being part of the problem.
Hang in there and take good care of yourself.