1st thing that comes to mind

Girls do that a lot, it keeps them occupied when they're bored.

 

*keeps playing with her hair* Sorry, what?

 

Nothing, just keep playing with your hair.

 

Oh, okay then! *tries to plait it*

 

*sneaks behind and braids Eris' hair*

 

*is too busy concentrating on her own failed attempts to notice*

 

*enjoys playing with it*

 

Gah! This is impossible! *gets frustrated and turns her fringe into shoelaces instead, then plaits those*

 

Aw, I was enjoying that

 

Huh? *notices Arcana* Enjoying what?

 

I was braiding your hair.

 

You were? Will you show me how? Please? *changes her hair back*

 

Yeah, I can do that. *explains the braiding process while singing and humming* how did I rhyme that?

 

*concentrates hard* You're a very talented wordsmith; I'm sure you could rhyme most things.

Is this right? *holds up her attempt at a braid*

 

Braiding things is easy.

 

Speak for yourself! I'm used to just conjuring things, this fine detail work is foreign to me.

 

*turns around* practice on my mane

 

You sure? Well, okay... *braids Arcana's mane as best she can*

 

*hums as Eris braids*

 

*falls asleep whilst braiding*