Thank you for you swift, but inevitably painful answer. I have copies of the music on my PC hard drive, but the voice memos - an hour or so of my Mother-in-Law telling the stories of her youth, amongst other recordings were only on the iPhone.
As you say, "Voice memos ought to have been included", but weren't and now treasured memories are gone! It's a real pity the local lad from an Apple agency in Penang did not warn me of this anomaly when he told me to reset my iPhone to "fix" a battery issue the phone is experiencing! That the "fix" did not work makes this loss all the more galling. A tragic learning experience, but, thank you for your insight.