Dog needs to be watched to pee

This dog I'm dogsitting for a few months won't pee at night and in the morning unless I'm out in the cold with her. It's on a balcony, and there is a fake grass surface that she pees on. She goes to the exact spot and then spins around sniffing a couple dozen times before finally doing the deed. She's around 2. Is it too late to fix this, and is there any point trying?