She got Cinnamon as a thank you gift from the Daycare that Nellcher volunteered at back at her father's home region!
(I used to have Laurel be from Hoenn but then I didn't felt so sure about it and now I'm having him be from a region based on Mexico~)
Nellcher was a volunteer during her teen to young adult years, the Aron egg was given to her when she was a teen so it has kept her company for quite some time 🥺 Aron grew attached to her quickly ;;

Cinnamon is overprotective of Nell as it has seen her cry multiple times so it doesn't trust anyone outside of the family. Though it has let her friends be close to it except for one Kalosian man lol