This may also help, I found this advice on another forum where someone else had lost their contacts on an HTC one.
"Go to phone app.Top left is accounts (google, phone, facebook, etc.) and tap it. It should let you see which account you have your contacts stored. Select it and there they be!"
I haven't used an HTC phone in quite a long time, so I'm unfamiliar with the changes they've made.
Did you manage to look into whether her contacts were still synced on the PC? If they're truly give from the phone, that will be the next step.
Sent from my Note 4
First, thanks for all your help!
I don't understand "Top left is accounts..."? Nothing like that here...
But as I said in reply to previous post, she WAS able to recover her contacts from PC.
