Answer:
He made her call him.
Explanation;
You see, the sentence you gave, "She was made to call him" is written in passive voice, notorious for sounding clunky and often misused by writers.
While the passive voice can be used properly, in this case it is misused. In the passive voice, the target of the verb(she) is the main focus. To convert this into the active voice, just make the subject the focus.
Who is the subject? Its Him
Therfore, we get, He made her call him
I hope this helped!
~~~Harsha~~~