Carolyn Hax: What to call Grandma becomes new front in her bid for attention
If instead your preferred outcome would be to indulge her on your terms — giving her some of the attention she craves, but not at your emotional expense — then try limited engagement: Tell her you’ll make three suggestions, for example, which she can use or ignore, no hard feelings. Mimi, Nanna, Gigi.
Source: WP