Beware - Homeless looking lady stealing mail, lurking in apt stairs in PH/CH

I got home around 11 last Thursday to find a homeless looking lady hanging out on the stairs right outside my apartment. She had about 5 shopping bags with her and had all sorts of stuff all over the stairs including a social security card. I asked her what was going on and and to leave and she said she was here to pick up cans from my neighbor. I walked my dog for about 20 minutes and when I got back she obviously was still there. I reminded her again to leave but left it at that since I wanted to go to bed and prayed she would not still be there in the AM. The next morning she was gone.

Today I spoke to one of my neighbors who lives in the building next door and he had a stack of mail for people in my building and other buildings in the neighborhood. He found her in the basement area of his building with her bags of stolen mail.

I am on St Marks by Washington, but apparently she had mail from buildings by Nostrand too. This lady was polite, but appeared a bit off, probably in 40s and African American. Be on the lookout if you see something that doesn't seem right. Don't buzz people in if you are not expecting anyone.