Usual
Don't you see that she was makign fun of herself - the person she used to be.
She basically said that a year ago she would have been all judgey pants and now she knows how hard it is to be in that situation.
I understood it as a 'jesus, how shallow and judgey would I have been if I had seen me a year ago'.
She wasn't making fun of those who shop in Primark, she was poking fun at those who judge them, cause we are all but a sudden redundancy, or a wanker of husband away from poverty.
Thats how I read it anyway.