Personally i would use the white balance dropper to sample from the whites of the eyes and use that, it won't be far off
I live in the UK and suggest you might look at MPB UK site. The cameras are good quality and less costly than new and if it turns out to be not required by your grandchild you can resell it to MPB.
These are really good number 2 and 5 are my favourites, well done
number 2 is really lovely
From experience with my son i agree with comments posted here. A decent Bridge/ Mirrorless, maybe used, camera with a zoom would help her decide if she's interested or not, She's lucky to have you helping her, good luck.
They are all amazing but for me number 1 is the best, well done
Well done any offer will help, btw i thought your last videos was very interesting, i live in the UK and don't belong to any religion.
#4 I think the new layout of UHH makes it difficult to view content and things get missed