She just seems content enough to make a suggestion, appear passionate about it and go in the huff when they (rightly) go with something else. As long as she looks all passionate about her own ideas, it minimises the accountability on her part if/when the final products turns out to be a pile of shite.
Tommy was very lucky this week that there was at least another person more shit than him. Not selling the bikes was a big mistake for him, but I think he's also been saved by the fact that Sugar can see potential in him. Next week he *should* do really well; nothing to design, create or pitch, just to blag some random shite on the cheap. He'll win this round for his team single-handedly IMO.