Love at first...?
Mei learnt most of her Pokémon skills and tips from her sister, Mari. Mei used to travel everywhere she went. She never had to do anything for herself whilst with Mari. However, as time past, Mari needed to move on from Kanto into Johto. Mei knew this time would come but still felt so alone. She technically hadn't even started her own journey, so they had to part ways.
Even when she left, Mei knew that all the knowledge from her sister would help her along the way. So, Mei had a good head start for her own journey.
Mei knew from the moment she met the egg, this was her chance to show the world that she can take responsibly for it. Her eyes beamed at the sight of the glossy egg in the basket as Ivysaur's Vine-Whip pulled her along. She thought about how much Emiko and Jin must trust her for giving such a precious thing. But she was still scared of not being able to take care of her. This was her first egg. What do eggs need? They don't eat... They don't drink... Do they sleep? Mei placed her ear against the egg. It was so warm. Just like placing your hands on a pregnant woman's tummy. The warmth was new life. In this case however, she looked like a new Pokémon mother, trying to understand how she would take care of it. Mei closed her eyes, she was so confused.
This would be the perfect thing to show my sister she thought. I will be able to tell her stories about all the times we had together. How I helped her grow up!
Whatever hatched from this egg would be from her own love and care. She felt so proud smiling but at the same time, scared of any troubles that might come.