Well, as it turns out, I'm not the only one SIL does this to. She has a friend who lives in OK, and she sends that person weather updates too. So far, she hasn't asked me yet why she can't post to my wall, and I'm not going to bring it up. If she happens to ask, I'll just cross that bridge when I come to it.
We are near Dallas too. Well, by "near," we are within a 100-mile radius. Our county was under a severe thunderstorm warning this afternoon, but the storm passed well to our north. We didn't even get spit on from it. I understand, however, that the storm did intensify and get pretty gnarly as it moved into east Texas though.