Umbelina Sousa - Are we sure ? Seems she lived 100 Years - 1 Day

I am being told by many people in the family that i met this woman in 1984 in the Lagouinas and that she lived to 100 Years - 1 day.
She likely passed away in 1984 or 1985 , making her bord in 1884.

Is it possible we don`t have here the right one ?
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Documentation is contradicting everything people close to me are saying about her.
Also note that this is Manuel de Sousa's sister Umbelina, but his wife also had a sister called Umbelina. Everyone is convinced it was Manuel de Sousa`s sister that we met in 1984 living with her daughters

In other words, Yes Manuel de Sousa has a Sister called Umbelina, but we don`t think the one originally documenter here is the same one.

Researching more