I don't think the 25 thing is true at all. I started nursing at 24 in 1996 (I worked in nursing homes since 1988 to support myself through education) I'm now 50. I can't believe I managed nursing at that age in very traumatic and serious situations sometimes ..seriously. I was so messed up outside work, working 60 hr weeks and nights with zero routine, stressed out of my mind, managing wards, out all the time drinking, buying my first house solo. I feel like a completely different person and know how differently I'd approach it now . That's no reflection on the court case, just that 25 is so, so young for some people. Certainly was for me.Or born December 1989 - June 2015 time of the first alleged murder she was nearer aged 26. I saw on here that someone said by age 25 your personality has settled? I don't know for sure.
Also the posed photos holding a baby & babygrow, we've already established she would probably look different now as at least one, or both, of the photos are from over 10 years ago, taken from the hospital's magazine of early 2012.
I think it's all individual, it depends on your upbringing, exposure etc.