How old was this woman (from Tomb of Annihilation) at her death?

Question

How is it possible?

Page 92 of the ToA adventure says:

A little over a century ago, Acererak entered Omu and slew all nine trickster gods. He then enslaved the Omuans and forced them to carve out a tomb for their defeated gods. When the tomb was complete, Acererak murdered the Omuans and sealed them in the tomb with their false gods.

So, group A was killed at moment 1. Okay.

group A = Omuans; moment 1 = a little over a century ago

Later in the adventure, it says on p. 165:

After Acererak slew the trickster gods of Omu and enslaved the city, Napaka, the city’s elderly queen, chose not to flee, and instead offered herself as a sacrifice in exchange for the release of her people.

So, person B was killed at the same time. Okay.

person B = Napaka; same time = a little over a century ago

Page 69 of the adventure says:

Seventeen-year-old Princess Mwaxanaré is the oldest living descendant of the royal families of Omu and the primary heir to the fallen kingdom. She and her six-year-old brother Na [...]

So person C was born at moment 2. Okay.

person C = Na; moment 2 = 6 years ago

The same page continues:

Their great-grandmother, Napaka, was the last ruling queen of Omu; their father, Omek, died in a fall, and their mother, Razaan, was killed by pterafolk.

Hm, it looks like his mother (person D) was able to bear children at moment 2. Also, she is a granddaughter of person B. But person B was killed at moment 1.

person B = Napaka; person D = Razaan; moment 1 = a little over a century ago; moment 2 = 6 years ago

According to page 137:

The skull in the crystal box belongs to Nepartak, the 10-year-old granddaughter of Napaka, the last queen of Omu.

So, another granddaughter of person B was born at the time of moment 3. That is strange.

person B = Napaka; moment 3 = 110 years ago

How old was person D when she bore her son? 104? Really?

How old was she when she died? Between 104 and 110?

Is this natural for Chultans?

person D = Razaan

Answer 1

We don't know how old Person D was; but she very plausibly could have been about 49-55 years old

It seems like you've misunderstood—or incorrectly extrapolated—the relationships between each of these characters, so I'm going to try to summarize everything all at once to make things a bit clearer.

• Person B, Great-Grandmother of Person C, died ~100 years ago at an age that can be described as "Elderly".
• Person C, Six years old at the time the adventure takes place.
• Person D, mother of Person C, and Granddaughter of Person B, age unknown
• Person E (not given an ID in original post), Parent of Person D and direct offspring of Person B

So let's assume, for the sake of argument, Person B had a daughter or son (Person E) who was about 10 years old at the time they died. In about 45 years (at 55 years old) they beget Person D, and then Person D gives birth about (55-6) 49 years later to their youngest son. In terms of normal human fertility ranges, that's pretty unusual, but certainly plausible, especially if Person E were male.

Answer 2

It's impossible to know her exact age, but probably not older than 40-50

Here is my understanding of the described events:

Napaka died in the event about 100 years ago. An unnamed child escaped. That child eventually had a daughter Razaan and a daughter Nepartak (the skull) (EDIT: this could potentially be Razaan's cousin via an aunt or uncle, since we dont know much about Nepartak). Razan later had a daughter and son, Mwaxanaré and Na.

It's easy to miss (I missed it initially, too), but the quote on page 69 labels Person B as the Great Grandmother of the two, not the Grandmother.