Earth to Purists! Somebody did a lot of good work to make this old bike more 'modern' and there isn't really anything wrong with that.
What you've got is a beautiful marriage of a B6 and a 7-speed. It screams, "take me up hills and ride me places others do not dare'! It has awesome saddlebags so it's very practical as well.
What's not to like?
Not everything has to be period correct! Buy a bike for it's usage! Her dad is apparently an excellent mechanic.