dudes, colonoscopies hurt less than going to a dentist for a cavity. The prep is the main thing that sucks because the stuff tastes like ass but hold your nose and chug. Easiest test you'll ever have and could save your life.
The biggest issue with all this is that ICE agents are in fact NOT police officers.
As a US citizen you DO NOT have to obey them in the same manner as a police officer and their rights to detain you are limited. Unless they were placing her under arrest she was free to leave and drive on. Most ICE agents lack the same training that your average state police officer would be forced to go through and thus are far more likely to do something stupid.
If you watch the slow-mo versions of the video people have posted you can see the ICE agent in question actually fired his weapon when his arm was fully extended away from his body still in front of vehicle as he had moved his body out of the impact zone of the front of her car. That's a terrible way to discharge a weapon even if you think you life is in danger. Seems far more likely it was a panic shot out of fear he was still in front of her not realizing he was no longer in danger.
Even if she had floored it at that point, and overal she was driving pretty slowly like a panicked mom might do, his arm would have just been struck by the windshield as she passed.