I think that is quite common, (((zorah)))... sometimes alters age and sometimes they don't -- on their "own"... what happens when the decision is made to integrate often is the "aging" of an alter to the body's age..

It would seem to be sensical though, that the age of the brain/personality when the -trauma- the reason for that aspect to appear- would create a type of 'imprint' in the brain?

Good to see you posting... hope you are doing ok, at least.