What's your image of the ideal "Diana" (Anne of Green Gables' bosom friend) in the modern world? What qualities would she possess? Maybe more crucially, what traits wouldn't she have?
I think she'd be someone with whom you could literally & metaphorically let down your hair, without her going "Nag nag nag fuss fuss fuss" about the hair on your head, or anywhere else. And she wouldn't try to make me feel like the "bad guy" when I burn with hatred for contemporary (c*ntemporary, even!) Josie Pye types, who really need a scold's bridle!
The perfect friend would share a laugh, and a big box of chocs; and she'd stick her tongue out rebelliously, behind the back of a dear "Marilla" who asks us to turn our music down.