A DNA analysis of the two hair samples would show both sources to be male, ruling out the Queen Mum as one of them. While it is possible that the analysis is only to determine similarity, it seems unlikely that this glaring detail would have been overlooked. Also, depending on the method, genetic fingerprinting would likely reveal that the two samples in fact originate from the same person, rather than from a parent and a child.
In various scenes in this episode, the name of the newspaper, The Weekend World, has been dubbed in over the name of the original scripted name of the newspaper featured in this episode.
In the final scenes with Stacie and Emma at the hospital, Emma is reading a newspaper where the large headline clearly says "Fake Queen Mum Story Rocks The World". However, as soon as she places the newspaper down on the bed, a word appears between The and World, although it has been blurred out.