Just let her keep sending them and you keep deleting them. I have a few people, aunts and uncles mainly, that forward these things on too. It's not too difficult, occasionally annoying, to just delete them when you see they're forwarded BS. If you think about it, it might be their weird way of keeping in touch. It's a way of contacting you and just letting you know they're thinking of you. I'd look at it more of just an email from your mom who happened to think of you than another one of those annoying forwards that she just sent to you because you're in her address book.