- She's older than she looks. (in reality, Lo and Li are her school mates.)
- Her dad took a young, very young wife at an old, very old age.
- Her parents were extremely old when they had her.
- Ta Min was very old when she gave birth to the child.
I'm just not seeing how this is possible. :/ Let's say she's 40, 100-40= 60 AG. Roku died in 12 BG. 60+12= 72 years old. Her parent had to have been 72 during Ursa's birth and that's if Ta Min had them after Roku's death. We saw no child with the couple when they were escaping the island, so if they're older, well.....let's say around 16 so they can be traveling on their own. They would be 88 when Ursa was born. Okay, let's go back to a reasonable age here, during Ta Min's child bearing years.
Oh, I guess Ursa's dad was just really old like Sozin, but it's still kind of weird since, let's be reasonable, the child would be like 107 with a bride that's 30-ish. She probably had to change more than one diaper. So, there really is a giant hole in Ursa's age. Either she's 100, her mom had her when she was 100, or she had a dad that had a very young wife (at least compared to him). Maybe Aang wasn't the only one stuck in an iceberg. Well, I hope has the answer.