User blog:Skipper8888/Mistake in BMT?

So, I thought about queen Calissa. So, Calissa gave birth to Merliah 17 years ago. Before I saw BMT2, I thought that Calissa must be 45 - 48 years old, because in Break's flashback, Calissa looked almost same, and this mean that she had been in her 30s when she give birth to Merliah. But in BMT2, Calissa told that 20 years ago she was 17 year old! And that mean, that she gave birth to Merliah 3 years after ceremony, when she was only 20 year old! So, I think there is little "mistake". First Calissa looks very young in ceremony. And in flashback she looks like adult person. Could she change so drastically during just 3 years? And also 20 years... IT IS TOO EARLY!!!!