What a brave thing to do, for all of you. But good on you for deciding, even if it was hard for your family back in the UK. I am sure at the end of the day they want your happiness to be paramount and understand that you realising your life is back in Adelaide is the key. That they have been supportive has probably helped ease some of your upset at having to say goodbye again but you know you'll see them in the not too distant future.
I hope things continue onward and upward for you all :)