Ok, some thoughts.
I said the other day that my gut feeling regarding Jade and Ed was that, after Melbourne, they are not together, and I've been mulling over why I feel that - but am well aware that I may be completely off base and they could be choosing china patterns as I type this (well - not literally as I type this as Ed is out partying tonight, but you know what I mean).
Ed is very different when away from his environment, and I think they worked well on the GC and in Ballina and Noosa and with the individual Ed that Jade knew in the house. Having spent time immersed in his Melbourne life, I think she may have realised how very intertwined and dependant he is with his sibs and friends. They seem very heavily involved in all aspects of each others lives, and I think that a person like Jade would find that strange and problematic. Ed is constantly with his people, socialising, shopping etc. When you look at Jade's photo history - she spends time independantly, being reflective and enjoying nature and the world around her.
When Ed had said in the house that anyone he went out with would have to fit in with his friends, it sounded like an excuse - but I think it is actually very true. At this point I think they are his world and the most important thing to him, and the base that he functions from - his core, rather than his support network. I think Jade may have realised this is a barrier and changes who Ed is when he is with them.
While there were only a few mentioned sighting of them in Melbourne, oddly none of them said anything expected such as ' you guys are such a cute couple' or 'you look so good together' like previous sightings have. They just say ' saw Ed and Jade at..' like might be said about seeing Tim and Drew or Tim and Ben
Fabio's tweets could support this - first telling her she is strong and he is with her (you'll get through this - 'Im with with you). Then telling her time is the answer, and that she has love and honesty. This could relate to a professional disappointment, as we've talked about, but could also mean the old saying 'time heals all wounds' type of thing, the 'love' she has could mean that she has the love of her family and friends as well as her fans, and the honesty could mean that she was honest enough with herself and Ed to say that their lifestyles were just too different (the language difference makes it difficult to interpret meaning).
This is all just conjecture, but what keeps niggling at me is instagram and twitter. Previously when they were apart and quiet on social media Jade continued to like photos of Ed's and his friends - whether or not Ed was liking hers. Jade has not liked or acknowledged anything related to Ed since Melbourne. Ed, while not liking any photos with Jade in them, did like her Bongo photo (which referred to Ed as her bestie) and her photo of her starlight campaign. But nothing since then - even yesterday and today when they were lovely photos of her - nothing, but he has liked Boog's. He did favourite her tweet thanking people for donating to starlight the other day - but any other favouriting he has done that mentions her seems to be coincidental, as they are aimed at him and he is acknowledging that rather than the mentions of Jade. Similarly, Jade has favourited things that mention Ed, but they are addressed to either her or both Ed and her and seemed to be favourited to acknowledge regular posters rather than Ed.
She has replied to various people on her twitter and instagram since her 'sad' photo so is reading what people are posting - but has not acknowledged any posts there or on FB saying that they hope she is having a better day, or things like that - not even a "i'm fine thanks

xx" type of reply.
Again, I may be totally wrong, but I feel she is just quietly working through her feelings while regrouping at her aunt's house.
Someone one on her FB left a post saying they would see her tomorrow. Not sure who the person is but they go to Southern Highlands Christian School, so she may be heading down to see her mother tomorrow