You say Tia abuela.
Tía
"Soy tia!"
Nuestra tía.
El nombre de mi tía es
Tatarabuela rebisabuela Bisabuela --- great grandmother
Tía is aunt. Bistía is great aunt or grand aunt.
Tía
Lev-aunt-a-say
Your mom's aunt is your great aunt.
"Soy tia!"
Nuestra tía.
you say call me great aunt not grand aunt
Your grandmother's sister is your great aunt
You say "tía Kristy".
'Great Aunt' in Welsh is 'Hen Fodryb'
the name tia in spanish is aunt
Your great grandmother's sister is your great great aunt (or some would say, your great grand aunt).