This old Asian woman mumbled something

As I was biking toward where I live, this old Asian woman walking toward me with a smile.  She stopped after she saw me as if she recognized me.  Then she mumbled something in Chinese  and looked away pretending she didn't see me; as if she didn't want me to see her face; as if she wanted to hint her face.  Meaning she had something to hint.

I don't feel safe here any more and need to move soon.