OK, now actually READ the posts rather than just jumping in on title. you ask:-
"any ideas out there on 'ow ta persuade 'er a landy life is the life ta live?"
EASY - ask her to identify why this is NOT the way to go.
if it be that green laning is too gentle, take her to some extreme off road, scare her ****less (adrenalin rush - gets womin hot!!!)
If it be that off roading is to rough - take in some gentle lane (show her your carining side, talk about bunnies n **** - again may get them hot)
If it be the whole I'm gonna get messy / break my nails type hype, get shot of either her (high maintenance) or your landy, cheper high maintenance (you woose), thay ain't NEVER gonna reconcile....)
If it be the cost of the whole endeavour ( and let's be honest, our hobby ain't cheap in terms of time or cash), well then your stuffed really, apart from the argument that 'it makes you happy', but this only applies if you are saving up for a house, kids etc, in which case............
your are screwed