I would probably remove it and teach her how to go up and down the stairs safely at this point. Better to have her just fall or slip down the stairs than fall from a height at an awkward position and then down the stairs. We taught our lo to use them as safe as possible from a young age, still not ideal but she can manage them now. Figured it’s got to happen at some point
If she’s climbing over it and can safely manage the stairs it prob safer just to remove it. I think it won’t be long until my we girl can manage to open it properly