She mattered stepping on the freezing think and come back .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (VBN_0 mattered) (S_2 (VP_0 (ATVP_1 (ATVP_2 (ATVP_0 (ATVP_0 (VBG_0 stepping) (PRT_0 (RP_0 on))) (NP_5 (DT_0 the) (NN_2 freezing))) (VP_1 (VB_0 think))) (CC_0 and)) (VP_1 (VB_0 come) (PRT_0 (RP_0 back))))))) (DOT_0 .)))