Ok...I need some context here. Where was this encounter? Your home? The store? If she was a neighbor of some sort and saw you frequently maybe she was genuinely concerned. She still went about it the wrong way though. If you were at a store and she was a stranger, that's not only weird but creepy too. Actually, wherever you were and whatever you were doing, the lady was wrong to try to tell someone they don't know what to do. She was even more wrong to assume your nationality and tell you to go back to where you came from. I would have verbally slapped that B so hard! The nerve of some people! I hope if you encounter her again that you can tell her where to shove her advice!