Oh Expat lovely... :(
I don't know what to say, that won't sound like empty, meaningless & disposable platitudes.
You can (and I believe will) get the housing/benefits situation sorted. It's understandable that you have a defeatist attitude to it, considering life did defeat you, in the cruellest & most important matter. I imagine your strength has gone - there are others who will help though, who will take this on & lighten the burden.
Life is shit, it is unfair & it sucks big time. It doesn't help to know that others stuggle too - unless you're Pollyanna, then what happens in your life is what matters.
I realise that your DS's birthday yesterday must have seemed torturous - of course it should have been the same as before.
I never had the pleasure of knowing Allidh, but by all accounts she was a very special little lady. How can that have been without you as her mother?
Expat Allidh was who she was because of you, not in spite of you.
I'm sure you know that your surviving children need you lovely. As desolate as you feel, it is a truth that cannot be denied.
They will continue to need you, even as adults. I'm sure in time you will realise this.
Above everything you are not a failure. Nothing of the sort. I wish life was fair, but it's not.
I know you don't believe in life after death, but I include a link to an interesting article the other day - it comforted me here I hope it doesn't offend anyone,
Thinking of you lovely, strong woman. Remember the night is often blackest just before dawn - I used to think that was a crap saying, but it is true - just hang in there xxxxx