I think Gemma has always viewed this as a golden ticket and that's why her mum is egging it on, she probably always thought 'I've got huge natural boobs so I can just get exposure from the show and start OF when it airs to cash in'. She isn't shy after all!
Remains to be seen how much money she will get from everything in the long run, surely for all of them the exposure of the show nosedives once it finishes, how many of us who actually watch it all can remember the people from previous seasons? The odd memorable one but not really any breakout stars.
The same with OF, the girls who decide to do that will obviously net a decent wedge early doors but I'd imagine once the pervs have seen their tits they are not going to keep paying unless the ante is upped. Regardless of their behavious I hope none of them put too many eggs in this 'fame' basket, for their own and their family's sake.