It is possible even if unlikely. But if you are right that it is way too unlikely then the next alternative is that her age was exaggerated by 3 years. The theo

It is possible even if unlikely. But if you are right that it is way too unlikely then the next alternative is that her age was exaggerated by 3 years. The theory that she "was her own daughter" I think is also possible but less likely than an (intended or unintended) error of 3 years somewhere.