Simplify the following text for a Grade 7 native English-speaking person.
Original: On September 5 of that same year , James appeared on the USA Network show Psych , playing a roller derby girl called Rita `` Lethal Weapon '' Westwood .
Simplified: On September 5 of that same year , James appeared on the USA Network series Psych . She played a roller derby girl called Rita `` Lethal Weapon '' Westwood .