* Most of her group is there when she arrives and ''still there when she leaves''. Gwen only got 28 days for DUI, grand theft auto and crashing the car into a house... what on earth did THEY do?
** There are many more ways to wind up in rehab than being sentenced by a judge, so it's a pretty moot question.
*** They could've been checked in by family or friends, for starters, or they did something really stupid. It's also possible that they were sectioned and ordered into rehab by a doctor.