Old Lady Sweeping the Stairs

Me: Hello!

She: I am scolding you. Do you understand?

Me: (confused) Yes. ( I don't know what to do here because I don't know what she's scolding me for [maybe because I'm carrying four bags of trash out?], and now I'm scared to walk down the freshly swept stairs)

She: (continues sweeping the stairs, looks up at me) Go!

Me: Okay (walk briskly down the stairs)