You should totally get Mrs Nicazakstan involved in this - it's SUCH a good atmosphere and a perfect first ride for "ooh! I didn't think I could ride that far in one day" type revelation.
Riding in a group on the road will do wonders for her confidence and lots of pub/ice cream type stops and if she does decide it's too much, loads of places you can bail and head for the pub.
You know it makes sense ; )
Haha! I'll ask her if she's up for it, it would be cool if she come along too!
Haha! I'll ask her if she's up for it, it would be cool if she come along too!