Board Thread:General Discussion/@comment-5521796-20130201044544/@comment-4839682-20130210192923

The banishment further severs the tie; and Snow was not a child at the time. The most Regina would have been doing is possibly ruling in Snow White's name until she became an adult; however she was a young woman at the time.

Further, in Storybrooke, they are not related; legally, former step parents have no relation to their former step children. (Unless, of course, an adoption occurred, but that makes them a parent and is totally different)