Allaboardtheallergybus on mumsnet does read very much like mod now looking back, I wasnt on them much but have just had a good look. The comments about Laura, the bigging herself up etc. The style of writing with little to no punctuation.
I'd probably put good money on Cady being Simon or someone related to it now and that they both knew who each other was. We'll never know, I'm sure.
So, looks like it wasnt just on here... cant be bothered to trawl all her mumsnet posts but I doubt she'll ever admit to it. She will sneakily approach mumsnet and ask them to delete, no doubt. And theyll do it because of the relationship with the advertisers etc.