I've just read this entire post and there are a few things you have mentioned that I don't understand;
- Your ex pushed you into the fridge-freezer in anger due to you moving parcells off the oven so that you could cook.
- If she is confronted about things her meltdowns are inevitable which subsequently cause her to resort to threats of self harm.
- She has been diagnosed with several mental disorders, with a possibility of more undiagnosed disorders currently roaming untreated.
- You frequently state that you want to keep things friendly with her so as not to jeopardise your co-parenting relationship for the sake of the kids.
There are so many highly questionable things that you have mentioned, that it is difficult for me to focus on just one thing alone, but I will try and give you advice based on my experience.
As a single mother to four, I have met with some very difficult challenges over the years. What I have taken from some of them is that when faced with seemingly impossible situations, you have to confront things head on and stand firm for what you believe in.
Much like your ex's unchangeable hoarding behaviour - I see that you are clinging onto every reason why you believe you can't do anything to make a change for your kids, and you won't let go of these excuses, which is what they are.
As a parent, you should be doing everything in your power to ensure that your kids have the best possible upbringing you can deliver - and your parenting attitude should be god help anyone who stands in the way of this, because how they are brought up gives your kids the building blocks they need to become well rounded human beings for the rest of their lives.
You can change their lives overnight, if you wanted to by doing the following;
- don't allow your ex's mental instability to dictate and control how you parent your children.
- tell the kids they now live with you, and move them in. Explain they can see their mother as and when they wish to, but their main residence is now with you.
- immediately reduce your house at work so that you can be at home for your youngest. Change the children's government benefits to your name.
- claim benefits until you find another job if your employer won't accomodate your reduced hours.
- your ex is not your child, therefore she is not your problem - there is help out there for her aside from her family - intricately designed to support her complex needs.
Allowing your kids to remain living as they are is mentally damaging for them - to not challenge someone due to their mental instability shows them that this is acceptable behaviour, on both sides of the coin.
Instead of giving them the tools to be able to healthily engage and work through mentally challenging situations in life, you are actively demonstrating that living as an adult and bringing up children without any understanding of basic human needs, like cleanliness and hygiene, is acceptable because psychological disorders are present! You are also giving them real-life examples of how acceptible it is to allow someone to continue to impose this abuse and neglect of basic human needs not just on themselves but also on children! And, you are teaching them it is perfectly acceptable to spend your life walking on egg shells around a ticking time bomb who can become violent at any given moment.
As adults, your children were already highly likely to develop mental disorders due to the predisposed genetic link to their mother's disorders. This likeliness will be doubled down by the added environmental factors they have witnessed by their mentors - their parents.
Thes kids stand very little chance of leading healthy lives as well rounded adults - any relationships they form will be laced by control and neglect, and it would be surprising if they will know how to regulate their emotions when faced with difficult life challenges, let alone how they deal with minor disagreements along the way. But, that's OK because as you have said several times in your copy/paste responses, you are superior to your ex as you work more hours than she does, despite her doing the lions share of housing your kids!
Anyway, who are we to advise? keep things as they are, the damage is already done. Us mums don't care, we just dish out advice because we have nothing better to do. And me? i'm no exception, I couldn't care less, despite my absolute novel of advice to you based on my 25 years of parental experience - pay no attention to it!
You do you!