She is only 9 months not even past a year, and like you said they were up before and they stood up for a few days after taping, Im 95% they will be up, just make sure you are doing the taping/gluing correctely, because if you aren't you can do more damage than good, my pup is 7 months and her ears went down after spay now I am in the same boat as you are. They come up very rarely but I am pretty sure that if you do the taping right and she has the right genes your dog will be fine. I was just at the dog park yesterday and 2 people told me that their GSD's ears came up around 1 year old so you have a lot of hope. She is VERY pretty. Good luck.