You have formed a correct present passive progressive construction. Being shows the continuity of the action, that she is driving now. Note that the active form would be more natural and more likely to be said: She is driving the car .
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Anonymous"The car is being driven by her"If the active is "is ---ing", the passive is "is being ---en" (where ---en represent the past participle.)