I wouldn't wish what she is going through on my worst enemy.
But of course it's a publicity stunt. Not the cancer, but the way in which it is being reported.
If this was being made public in order to raise awareness then it wouldn't be made public for some time, until JG was well on the road to recovery, then a statement could be released stating that "jade Goodie has revealed that she has been recovering from cervical cancer, and has urged women that screening is vital" etc etc.
But now the public will be following her journey through treatment (through the tabloids and the trashy mags obviously), and they will (her agent hopes) begin to see her as a brave woman who is battling cancer, and everything she's done in the past will seemingly be forgotten.
JG is an immensely disliked and unpopular woman, the whole celeb BB fiasco pretty much ended her "career" (if being a contestant on a reality tv show can be considered a career) and this might possibly bring her back.
I don't know who is making these decisions for her though as I can't imagine that she can be in any state to be thinking about publicity, but I am 100% certain that the only reason this is being made public knowledge is for publicity sake rather than awareness.