We call her “ammi”
but my ammi used to call her ammi (my naani) ammi jaan (yes the full word)
The weirdest was on my paternal side, my father, uncles and phuppos called my dadi - “baji” - logic being that she was the eldest of all her siblings and everybody called her BAJI - so this trend carried on to the kids as well
My kids call their mother “Mamma” - not as in MA MA - but Mumm’Maaa
merii ammii to jab maiN 9 baras kaa thaa tabhii intiqaal farmaa gaii thiiN is. jab tak vo baa-Hayaat rahiiN maiN aur ham sab bhai bahen ammaaN hii kahte the...mujhe ammaaN bahtar lagtaa hai...iA, mere bachche apnii maaN ko ammaaN aur mujhe abba kaheNge iA...varna...DanDe paReNge iA ?] ... hehe