Remote control of iPad (from a PC ideally)? I've had a quick look through the search results, and am not able to find a suitable answer. 

My scenario is this - my mother in law in her 70s, is not all that keen on technology. She's also self-isolated thanks to Corona. 

We're sending an iPad her way, that we can get 'set up' in advance... but what we really need to be able to do is remote-support it, because we can't go and see her in person.

To that end, I'm wondering what the best option would be for remote support. We have available an iPhone, a PC and an Android phone. 

I'm currently contemplating something like teamviewer (the 'quick support' looks to allow screen viewing which would be a start), but if there's a free option out there that'd be better still.
The best solution we've found so far, is 'teamviewer quick support'.

It doesn't allow for remote control, but it does permit screen sharing. An app on the iPad generates a 'connection ID' and a remote client on a desktop system can then connect to it, and view the screen.

It's not exactly what we wanted, but it's sufficient to get started.