intimidated by both her subject matter and 
(ROOT (S (VP (VBN intimidated) (PP (IN by) (NP (CC both) (NP (PRP$ her) (NN subject) (NN matter)) (CC and))))))
(ROOT (S (VP (VBN ) (PP (IN ) (NP (CC ) (NP (PRP$ ) (NN ) (NN )) (CC ))))))