How was Sara supposed to get from her car to the house?
In a manner that did not involve pointing a weapon at another person?
Again, weapons are not to be used to frighten people, nor are they to serve as "back up" in avoidable situations.
Using weapons in that manner risks letting a violent genie "out of a bottle". Once the genie gets out, things can escalate fast. The genie does not like going back in the bottle.