gets harder and harder to understand her choices 
(ROOT (S (VP (VBZ gets) (ADJP (JJR harder) (CC and) (JJR harder)) (S (VP (TO to) (VP (VB understand) (NP (PRP$ her) (NNS choices))))))))
(ROOT (S (VP (VBZ ) (ADJP (JJR ) (CC ) (JJR )) (S (VP (TO ) (VP (VB ) (NP (PRP$ ) (NNS ))))))))