Suddenly she started, and her face blanched.
( ( ( ( ( Suddenly ( she started ) ) , ) and ) ( ( her face ) blanched ) ) . )
(ROOT (S (S (ADVP (RB Suddenly)) (NP (PRP she)) (VP (VBD started))) (, ,) (CC and) (S (NP (PRP$ her) (NN face)) (VP (VBD blanched))) (. .)))
She stood immobile, and had a stern expression on her face.
( She ( ( ( ( ( stood immobile ) , ) and ) ( had ( ( a ( stern expression ) ) ( on ( her face ) ) ) ) ) . ) )
(ROOT (S (NP (PRP She)) (VP (VP (VBD stood) (NP (NN immobile))) (, ,) (CC and) (VP (VBD had) (NP (NP (DT a) (ADJP (JJ stern)) (NN expression)) (PP (IN on) (NP (PRP$ her) (NN face)))))) (. .)))