Hi and welcome to YT! Sorry, your post hasn't received a response before now, guess there aren't many that litter box train here? I would think your idea of slowly transitioning her to pads by placing some litter on a pad would most likely work out fine. I've read to train a cat to use a toilet, you can cover the toilet seat with plastic wrap, place a small amount of litter on the plastic. The cat gets used to going on that surface then, you eventually remove the plastic.
Good luck....you'll have to let us know if it works
