Glenda, I have lived here all of my life, which is much longer than 40 years so I think that qualifies me to comment on the history of the Vortex site. Secondly, weren't most of these people given cash incentives to move too into their lovely new houses too? (I am not referring to private tenants who have purchased some of these new houses) She should be happy that she has a new house! Some people will NEVER be able to have a new house.
These are all common snagging issues which could take a year or so to rectify, the house is still settling and cracks, movement could appear up to a year or so after the house is built and take a while to settle down completely.