Hi and welcome to YT.
Have you heard of potty pads? They are pads (disposable or washable) that you use for indoors. You can pretty much find them at any place that sells pet products. They are wonderful for the winter and yucky weather. The disposables come in many different sizes. You leave one whereever you want them to get used to pottying. Once you pick a spot, you should move it slowly because they learn where it is. Even with the pad, you have to watch them very carefully as they still need to learn that it is for them to use.
I would put a couple together in an area and as she gets used to them, slowly make the area smaller until you have one pad down. Now, I have kept mine on pads as well as taking them out. I keep one in their expen and we kept a couple in my hubby's garage and they "go out" throughout the night and in bad weather.
The washable pads are reuseable and have a cute print sew on top so it kinda hides the fact that it is a potty pad.
If your little one is eating throughout the day, I wouldn't worry about blood sugar levels. 9 week old puppies need lots of sleep.
Shoot, 3 1/2 year olds need a lot of sleep. lol, my boy sleeps quite a bit. Just keep an eye and make sure that she's got food and fresh water available at all times.
How did her vet appt go?