Mine can go up the stairs in a flash, no problems there. It is the going down part they have trouble with. Trixie got the hang of it, but Scampers won't go down the stairs. One time he tried and he ended up rolling down the stairs, of course this was when he was real young and only weighed 2 pounds and he scared me half to death. Now he weighs 5 pounds and he will go down maybe a stair or two but that is it. He would rather go up them, then go down. I had to put a gate in front of the stairs because he would go up the stairs, get stuck and want to come down. So I would bring him down and he would do it all over again. So the gate stops him from going upstairs, and really there is no point for him to go upstairs, the only time we go upstairs is at night. But, he is fully capable of going down the stairs, he just does not want to!!!
Give her some time and work with her and encourage her, and don't ever push her, she will learn on her own time. Soon, she will be zooming up and down the stairs and then you will wish she never learned.
