I think it's a good move, because either way she's going to get a kick up the backside.
They always say the best way to overcome something, is to do it and i think the fact she's come into the house wanting to prove people wrong is a good thing. Everybody who looks at her will have some sort of stereotype to throw at her, and this show could either diminish these thoughts or consolidate them.
Hmm, that was the best i could do without talking woffle... if it doesn't ound woffle already!
So yeh, i think its good all around for someone like Lea.