Yeah the chasing them is a tough call. On the one hand you can't have precedent that if you drive dangerously enough the cops will give up because then no one would ever stop for them, but on the other hand they probably had some trivial amount of drugs on them and it's not like they were chasing someone who was just wrapping up a drive-by shooting. I mean, they could have - but there was nothing pointing to anything more serious at the moment then her potentially being unlicensed and the car having fake registration.