I am sorry for all your pain on every level. I was thinking of this post today cause I saw my ex step dad I call dad for the first time in 4 years. I realized how sad and alone I truly am. I knew it but some things like this and talking about old time makes me feel it more.
I very much agree about the chemical imbalance. I feel I had this even pre rsd.
I also have friends with a lot of mental struggles and it breaks my heart too cause I know the pain one experiences.
Sorry this is not much advice. Do you journal? I may have asked that already. Sometimes that can help. Also I know you stated you had some changes going on with family moving away and sometimes it takes time to adjust.
Sending happy thoughts