it wouldn't bother me, but then again I don't share anything personal on facebook. everyone uses facebook for a different reason. some people use it to get to know others better and to even met totally new people. Unless you told her that you only allow close family and really good friends then she wouldn't have known that you might not welcome her friend request. I say just ignore it if you want or send her a little note explaining that you only friend family and forgot about it!!!