>>51758307She had a block, all for basing her entire strategy on a single pokemon. It was thanks to her journey with Ash that she managed to overcome this and when they said goodbye to him she continued her path alone.
It could be said that (apart from the obvious convenience of the script) what delays Ash in his growth as a trainer are his friends, they are always helping him and do not allow him to grow by himself, an example is that now that he stopped traveling through a region and only dedicated himself to fighting in a ranking tournament, his level rose exceptionally. Just look at how strong and confident Ash is from the AU's films.
