She was back in the field where she had ran into the Bowtruckles. Hermione thought herself lucky that she was able to retrace her steps, and she thought herself extremely she was able to find fairy eggs in the area the Bowtruckles chased her into. When she had looked back up at the sky when her phone died, she found several large elephant ear leaves where the underside was covered with the eggs. She knew fairies had the ability to lay fifty eggs in one go, but never had she seen the product in real life before. Thus her plan was hatched. She severed three of the leaves from their stems and very carefully placed them in her bag before heading back from where she had just came.