Lone Star's effectively banned in four countries for murder, arson and indecent conduct. Not because of the country itself, but because THAT many ponies have filed- nah, that's stupid
LS isn't a terrible guy (usually, anyway) but he's insane enough that he's not going to behave as a pony should at all times. The smell of cooking flesh has absolutely NO reason to smell good to a herbivore. Let alone the flesh of your own species.
I considered having LS offer her a 'carrot' - namely, Star, Es and Fox would make out with her. It seemed too far-fetched.