My mother and I own a little chihuahua which was bought at adult age so we thought it was to late to train her, she usually does her business outside first thing in the morning but then does the rest on the floor in either the hallway or bathroom, we live in a shed on a rural property owned by my family at the moment but we will be having to sell up and move into a house in the city and mum has made it very clear if she can't pee on the pads that we've tried on her for about 6 months to a year at this point, then she won't be coming with us, which I refuse to let happen as I sleep with that dog beside me and it's a support system.for me at home, so I would appreciate any advice on how it's possible to get a dog as old as her to learn to pee on the pads or perhaps any alternative methods or systems that any of you have used to fix this. Grateful for any help.