Autos can be quite unpredictable when it comes to their height and tolerance for training. I’ve had one grow really tall and 2 others grow to a medium/short height (2nd fan).
I think it depends on the genetics and strain. It is very helpful to research other people’s grows of the strain to see what kind of heights they reached because with autos you are very limited in controlling the height.
Since she was topped, that’s a considerable amount of stress, and I don’t think you will have to worry about height issues.