Agreed, if your daughter is hoping to show in an APA sanctioned show, SLW from hatchery stock are probably going to be disqualified or at least not do well because they aren't bred to the standard that the judges are using to judge them.  However, if your daughter is going to show in 4H it may depend on whether the judge is using APA standards or not.  Small county fairs and similar shows often aren't sanctioned and the judges they use may or may not know anything about the breed standard.  If the judge for a small show that isn't APA sanctioned isn't judging based on the standard hatchery stock may do fairly well.  Also, 4H usually offers a showmanship class where the judges are looking at what the kids know about the breed they are showing and how they handle the birds rather than judging the birds themselves.  In showmanship, birds with disqualifying faults and even mixed breeds can be shown and do well because the judge is judging the kids and not the birds themselves.