怎么回事？为什么她被收押了？
老祖母以谋杀罪被收押。[{'character': '老', 'pinyin': 'lao3', 'highest pitch': 9.22, 'lowest pitch': 7.33, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '祖', 'pinyin': 'zu2', 'highest pitch': 10.7, 'lowest pitch': 7.33, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '母', 'pinyin': 'mu3', 'highest pitch': 10.79, 'lowest pitch': 4.77, 'duration': 0.33, 'prosody hierarchy': '#2'}, {'character': '以', 'pinyin': 'i3', 'highest pitch': 7.69, 'lowest pitch': 6.86, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '谋', 'pinyin': 'mou2', 'highest pitch': 9.42, 'lowest pitch': 6.56, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '杀', 'pinyin': 'sha1', 'highest pitch': 10.64, 'lowest pitch': 9.42, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '罪', 'pinyin': 'zuei4', 'highest pitch': 10.44, 'lowest pitch': 6.85, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '被', 'pinyin': 'bei4', 'highest pitch': 7.73, 'lowest pitch': 6.23, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '收', 'pinyin': 'shou1', 'highest pitch': 7.89, 'lowest pitch': 6.65, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '押', 'pinyin': 'ia1', 'highest pitch': 7.62, 'lowest pitch': 7.04, 'duration': 0.29, 'prosody hierarchy': '#4'}]