Kintsugi
Sponsor
I don't know how helpful this is, but I *kind of* have experience with this issue, since my biological (I'm adopted) mother most likely had PTSD. She was diagnosed BPD, but she had suffered childhood rape from her stepfather, many abusive relationships including my father, and teenage homelessness. I met my biological siblings when I was 18, and a couple have been diagnosed BPD, and they all had or have issues with anxiety or depression including teenage self-harm, suicidal ideation, and other reckless self-destructive habits. They also suffered child abuse from our father.Psychiatrist has decided medication and therapy. The wheels are in motion now. I really look forward to the results and my child getting better.
The brighter side to this is that I am the only one who seems to have PTSD (instead of mood/anxiety disorders of another nature) from my own, totally separate trauma which was not perpetrated by my adoptive parents, and I was in therapy when the signs of depression and extreme anxiety were appearing strongly at the age of 12 or 13, and I believe that it is because of this support that I am the best-adjusted of my siblings and the most likely to have coping mechanisms that are healthy and productive. I have a lot more resources than were ever available to them, and it seems to have done a ton of good for me in spite of my diagnosis when compared to their progress throughout their teen and young adult lives.
SO I would say that although it seems we did inherit something from being born to untreated and very disturbed parents (which I think you aren't), and my mother was obviously under an extreme amount of stress during her pregnancies (having actively abusive partners), I have found treatment, support, and a higher-end lifestyle (not living in utter trailer park poverty and an addicted community) helped me go far beyond my siblings' struggle with their mental and emotional health problems in spite of the fact that my diagnosis and symptoms are much more drastic than what they report experiencing.
That all sounds really sort of doomy, but I really do mean this as complete encouragement that even if your personal experience has had anything biochemically to do with their development, the right treatment, support, and attention to those arising issues can help them to not only--I think--overcome their struggles to cope during adolescence but will also prepare them better than most of their peers for average challenges and moments wherein practiced and healthy coping skills will benefit them hugely.
That they have your support, attention, and investment in their health is a blessing most kids never have while they go through their battle to come of age.