I’d be more of build-up. It doesn’t confirm WHY they abandoned her. Also in TFA and TLJ pre-throne room they already give out evidence and hints of Rey’s insecurities. (That’s also my Reddit post.)
Please don’t link to a post off-site for some vague explanation for a discussion taking place on here. Discuss it / explain yourself on here.
With the amount of suggestions and posts made in this thread… you could have written your own TROS fan edit novelisation - just how YOU want it - and not how you want others to make it.