Tell her you only have 6 months to live and it is your dieing wish to have the most hardcore JK in Australia,when all the mods are done you can tell her the joy of seeing your JK complete has given you new zest for life and your illness has gone into complete remission.
She will be overjoyed that you are not going to cark it and you will have your dream Jeep.
Its a win win situation,it cannot fail I tells ya