In some ways we seem to have gone full circle in that the consensus of opinion - including, I believe, your own Frida - is that it is in your bests interests, and those of your dc, for you to stay in the US and continue with your existing therapy.
However, without knowing your childhood experiences or the dynamic in your family home, I am wondering whether the manifestation of depression during puberty or post-pubescent years was caused by a hormonal or chemical imbalance that may have been easily treated at the time.
If any such underlying medical cause is overlooked, the 'label' of depression can be a self-fulfilling prophecy if we continue to manifest the signs and symptoms of a mental health condition.
It occurs to me that you are still very young and have not yet overcome your experiences in the sex industry which, unsurprisingly, would have done nothing to improve your sense of self-esteem and would have only led to a greater lack of self-worth.
Your recent acting out may have been triggered by an adverse reaction to a drug but, without wishing to enter in an extensive philosophical debate, it is unlikely that you would have acted out in that particular manner if you didn't hold unresolved thoughts about s&m.
As Eurostar has implied, if you chose your dh because you believed that he was an 'adult' who was offering you a 'safe' refuge from yourself or from the sex industry, it may be that you resent what you may perceive are his 'controlling' ways in much the same way as a child may resent a parent laying down boundaries to protect its safety.
In addition , you are presumably financial dependent on your dh which state of affairshas been known to upset the balance of harmonious relationships and can impact more severely on those where imbalances already exist.
In any event, a Soto zen zazen meditation is very different from a guided visualisation in that there are no anchors to impede direct self-realisation.
You can read the book 'Sitting Buddha: zen meditation for everyone' by Daishin Morgan at www.throssel.org.uk which is the website of a zen buddhist abbey in the north of England.
As you are already recording your feelings on a daily basis, I would suggest that you rate them weekly or fortnightly rather than rushing to grade them at the time of writing.