How do you address a card to grandma in spanish?

Answer 1

'a la/mi/nuestra abuela/abuelita'

'a mi' = to my

'a nuestra' = to our

Otherwise 'a la....'

'abuela' = grandmother

'abuelita' (literally 'little grandmother') is more affectionate, 'granny/grandma' etc.

Answer 2

Adios abuela