He also said that his mother has never taken a bus by herself, and guessed that it might be some good-hearted people helped her go onto the bus. Since she is suffered from minor senile dementia, she did not know where she had gone herself at that time.
他还称，母亲不会自己坐公交车，估计是被好心人扶上车的，其又有点老年痴呆，糊里糊涂就不知道坐去哪里了。