Helluva Trio 2 pg 31 inks (commentary) (Patreon)

Millie is a kinky one. No fear.

I think it's also flattering to be fawned over for your breasts by someone who clearly has a larger set. Like, she knows that Loona wants to fondle them not because they're a nice set of tits, but because they're Millie's and it would make HER feel good.