If she is on your DH list then don't respond!

Nah, it would be a bit rude, but having said that, I have an Aunt whom we don't have anything to do with anymore (Mum had a falling out with her sister, my Aunt) and it got to the point where my cousin deleted me off her FB. But the Aunt still sends my DD gifts for her b'day, Xmas etc.... I have no idea why but I never ring to thank her or anything. I don't think she has our new address b/c she passes the gifts through my other Aunt.