Sentence:  In my opinion, Sarah was a total <WSD>screamer</WSD>. ... She screams in BRAIN OF MORIBUS, PYRAMIDS OF MARS, PLANET OF EVIL, REVENGE OF CYBERMEN, GENESIS OF DALEKS, SEEDS OF DOOM, ARK IN SPACE, etc, etc. In just about all her stories. When she is not screaming she is yelping, "Run Doctor RUNNNNNN!" 
Meaning of the word marked with <WSD> tags:  One who screams; one who shouts; one who sings harshly.