Hi Wits end
Welcome to the family, I'm glad you found us for support and sorry you are in such a difficult situation at your wits end, parents here understand, some in similar situations, you are not alone.
Threats of suicide / suicide ideation is terrifying as you say, my 29DD was hospitalised for self harm a number of times I want to share with you things can get better with your DD in therapy and you reaching out for support. How often are the threats? When do they happen, result of anything specific? In my DD's situation the therapist firstly worked with her on her suicidal thoughts and self harm. I'd like to share this with you
Helping someone with suicidal thought You deserve happiness, we all do, have you considered therapy for yourself, to help you work through?
I'm glad you are here with us, we care.
WDx