Thank you for sharing your experience with us, it sounds like your family is going through a really tough time at the moment. It's really great to see how much you care and want to support your family by reaching out for some help.
It might be helpful to book in a free session with our 1 on 1 parent coaches - you can do that here. They will be able to give you some more individual advice and strategies to work on.
In regards to feeling like you might have to threaten your daughter that you'll lock her out of the house, I'm wondering if she would have somewhere safe to stay if you decided to take this route? We have this article about supportive parenting techniques that might give you some different options too. It might also be helpful to check out Relationships Australia to see if any of their services would work for you and your family.
I imagine this situation must be causing you a lot of stress, do you have any supports in place like a therapist or psychologist for yourself? It's so important to look after your own wellbeing too.
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