wow!! She IS doing really well! I'm so proud of her
I know when Romeo used to use the pee pads and we didn't take him for walks because he hadn't had his shots. When we started taking him on walks, I started saying "go pee pee" and "go poop". He wouldn't go as soon as I said it at first but I said it over and over and when he would finally go, I would praise him. So overtime he realized what I was asking him to do. Now he holds it until we go for his walks which is several times a day. When we have to leave him by himself, we usually leave him in a room and leave his pee pads and he's pretty good at going on the pads.
So I would try that. But make sure she gets all her shots so she's all covered.
Good luck and keep us updated...