All puppies start and stop teething at different times. I would say to get an idea, look at your puppies teeth. Does she have all baby teeth or some adult teeth. Also, count how many baby teeth she has left if she already has adult teeth coming in.
Massaging their ears also can help. Not all puppies ears will go up by themselves, that is why some of them need taped to help them along. Make sure the tape you are using is light weight and that you are not putting alot of tape on because this will all weigh down the ear. Also, if you don't position and tape the ear just right it will flop down. It took me several tries on a ear to get it at the right position and tape it there and if I didn't do it just right it would flop down. I like to tape my babies ears just to make sure I have a better chance of them standing up. Sometimes they need the tape for them to develop the strength for them to hold up their ears by themselves. Just keep in mind that after 6 months it is harder to get their ears up.
