Why not rate different pokegirls on how groomable they are? Starting with little damsel rich girl Lillie. I'd personally rate her pretty high.

Pampered upbringing but busy parents, overall pretty passive and badly in need of a friend or someone to guide her. I'd feel bad taking advantage of the poor kid. As much shit as Sun & Moon given for shoving her onto the player all the time, it was because she really needed help and didn't really have anybody else. At least not then. She's rebelling against Lusamine and Aether, and her older brother is fucked off doing his own thing, leaving her quite isolated (and desperate) in the beginning. Postgame Lillie might be a different story, but it's tough to really change all that much in such a short span of time. Old habits and all that.

9/10. She's lucky she ran into Elio/Selene, and not some shameless horndog or somebody who'd use her to get Lusamine's money.