As you know, Papabear is not a trained psychologist or therapist. Also, some letter writers have indicated they are in serious crisis mode. The below is a list (in progress) of helpful organizations and other resources where professionals can provide you the kind of assistance Papabear cannot.
National Suicide Prevention Hotline
988 or 800-273-8255 (USA only)
Domestic Violence Help
The National Domestic Violence Hotline at thehotline.org, which includes online chat for immediate assistance.
The Childhelp National Child Abuse Hotline, 1-800-4-A-CHILD (1-800-422-4453)
The Crisis Text Line: text START to 741741
The National Center for Victims of Crime at 1-855-4VICTIM (1-855-484-2846)