Board Thread:Questions and Answers/@comment-25575914-20151126224514

I was very surpised when I noticed this on wikipedia some time ago and it now seems to have been added on here too, because as to the best of my knowledge it has never been mentioned in the show that these two characters are related, never mind first cousins. When Lizzie first arrived it was established that she was an old friend of Lisa's, Lisa seemed to imply that they were once neighbours. The press release announcing the character's arrival also states that she would be an old friend of Lisa's.

http://www.digitalspy.com/soaps/emmerdale/news/a148246/soaps-first-blind-actress-joins-emmerdale/

https://youtu.be/zh4x3ee71hY?t=7m28s

Also to the best of my knowledge Lisa's maiden name has never been given in the show, so it defintiely seems to me like all this has come from someone's imagination. 