What does the girl mean by being poor? I asked her why she did it.

You asked him why he did it, but you didn't say what he was doing. If a girl wants to say that she is poor, it may be because she has done something she shouldn't have done, such as doing the flesh business or selling organs to make money. The implication is that what she did was disgraceful and harmful to his health. It must be bad for his family and his character. He said that she was poor, which was certainly no reason. The poor can find ways to change this group.