Autumn had trouble developing a bond with her Miltank named Ilta. She was convinced that she would never get to know Ilta and wanted to release her. However, Brock convinced Autumn to let him teach her how to grow closer to her Pokémon.
Autumn had trouble in the beginning because of her clumsiness. A lot of the training didn't work, but when she jumped in the way to protect Ilta from a swarm of Beedrill, Ilta realized that Autumn cared for her and began listening to her instructions.