Azur has pretty much covered it
.
If you want to go on the cutting compound route then something from here:
https://www.cleanyourcar.co.uk/paint...-cut-compounds
and to really get to grips with it then try a microfibre pad:
https://www.cleanyourcar.co.uk/paint...microfbre-pads
Yes, you'll need to keep the pads clean with your usual routine and probably two or 3 should be plenty to be able to keep going while the "used" ones are washed and are drying off.
I'd see how good the finish is before shelling out on yet more pads - what have you already got? You may find the Meguiars UC finishes down well enough until she can be professionally looked after.
Hope that helps