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