I have no idea if she remarried but she may have been living in Point Chevalier.
* Where does this address come from ?
* How do you know that she may have been living at Pt. Chevalier ?
* Why do you say "she must have died after 1970" ?
* How do you know she emigrated to New Zealand (and to Auckland in particular) ?
* What do you know about her son George ? (Do you have a year of birth for him ?)

~ Lu