I just caught up with this post ,God ,man,thats f***ing heart breaking
I know its no consolation but is there is a way the frame routing could be adapted to take the cable up to the mech
I think this is what you need
Scroll down to the bottom http://www.bikepedlar.co.uk/acatalog/Front_Mechs.html
I'll have a look about ,and see if i can find one