After first positing the idea of Millie and Shane being friends, a few of my viewers expressed curiosity on just how the two of them even met. Well, simply put, Millie was hired on as a new waitress for the restaurant, wherein she started working under Shane as a trainee (since Shane would be the senior waitress and thus the one responsible for giving the other waitresses directions).
As for how they became "friends", well, Shane should probably be more careful on what she calls other people; especially if the other person in question is "excitable" over the idea of making new friends. X3
In any case, I hope you all enjoy the mini-comic. =3