agreed, this is an attempt to make corby look like the poor innocent damsel who had drugs planted in her bag.
it is an amazing co-incidence that the corby family resides next to a convicted pot grower and dealer, there appears to be drug history in the family. also, her sister mercedes is married to an indo who runs a "surf shop" in kuta.
if corby didn't put the drugs in herself then she knew who she was carrying them for i reckon.