Yes, she was allowed to see her child and yes, photo id is legal and common, particularly under gruesome circumstances.
Could you provide the publication/link to the interview you’re referring to?
I can’t seem to find anything that says one of the mothers insisted on and actually got to see her slain son. But then again I’m not that good with a computer either.
If you could it would make a lot of people feel better that at least one parent got to see her son and say some parting words to him.
Thanks