Hi there milipalmeras
I'm glad you've been able to arrange to meet with your daughter next week and hope it goes well supporting her to move forwards, perhaps that's what she needs your support to help herself. We care about our members can you let us know how it goes? It's heart breaking seeing our children struggle managing their emotions, using harmful coping mechanisms, destructive behaviours and it’s hard not to take it personally especially when as you say your DD's anger and irritation is directed at you, it hurts. Like your daughter my 29DD cut – it’s 18 months since she last cut, she’s been receiving DBT, things can get better, it takes work.
Have you read the listen with empathy and validate the valid tools to your right

Often considered the most important tool for supporting a loved one with borderline personality disorder, is "empathy" and many of us over estimate our own empathy skills. My 29DDdaughter needed me to listen and validate her feelings. Those were the first tools I used when joining here, my DD was in crisis, opening up communication my DD felt understood, supported in a loving environment and not alone.
Actively using the tools here help improve our relationships with everyone, I’m thinking of your other children here.
Do you have children at home?
We are walking with you.
WDx