!!!!!!!!!!

i say im fine then i remember this part of the original hadestown nytw production

Let's appreciate how complex Agatha's relationship with Billy is

GIF credit to @isagrimorie

The genuine emotion brimming from Agatha in this moment is very interesting and I really want to break down all the layers of how Agatha is relating to Billy—because it is truly not as simple as Agatha feeling sentimental or motherly to Billy.

There are a few layers at work here (and I also want to give a shout-out to @trickofthelights for her excellent recap points):

Billy reminds Agatha (enough) of herself

There are two driving forces at the core of Agatha as a character. We know this because her characterisation has been incredibly consistent throughout the show and Schaeffer has talked about them, which is: (a) Agatha is self-serving and (b) Agatha loves powerful witchcraft.

Billy is a powerful witch who did a horrifying thing in order to survive. He's been lying to these wonderful parents. He also just tried murdering three people in a fit of rage, provoked by Agatha no less.

Would Agatha care if he was less powerful? Would Agatha care if he didn't have a dark side? If he hadn't shown to be duplicitous and dangerous and subject to his darker impulses?

If he wasn't alone and without a coven, a possible outcast even among witches because of his unusual origins and power?

I'm pretty sure the answer is no, she would not. She would have dismissed him the same way she did his "Teen" persona. Agatha doesn't care about witches, Agatha cares about powerful witches –because that's who Agatha is and what drives her.

And we also got hints of this with Agatha and Wanda (hello consistent characterisation). In Schaeffer's words:

There is respect and almost affection inherent in [Agatha's interest in enormously powerful witchcraft], as indicated by how she felt about Wanda. She was mean to Wanda, but really she was fascinated by Wanda and admired her and wanted to hang out with her.

And if this wasn't clear enough, what Agatha tells Billy shortly later about breaking the rules and being a true witch just screams projection (more on that in my next point).

I was delighted that Agatha really did bounce back from the attempted murder – but it's not because she's forgiving. Oh no, I think, Agatha was testing her theory by poking the bear (calculated move, bad at math) and she's glad she was proven right.

I mean, she not happy about the attempted murder but her curiosity wins out. You see her poking at Billy and trying to figure him out in the rest of this scene.

Agatha also hates self-righteous moralising and searches out for the darkness in people – delights in it even – because she knows people and she knows her own darkness.

Billy is different but also not so different from Agatha, as much as Billy or his mom would hate to admit.

Agatha is dealing with her childhood trauma

Yes, Agatha is projecting on Billy, but she makes a choice about it. We hear her telling him what she would have wanted someone to tell her: that they shouldn't be afraid or ashamed of who they are or what they did to survive, that they are part of a community.

Don't you dare feel guilty about your talent. ... That's what kept you alive. That's what makes you special. That's what makes you a witch.

She's trying to be the person she needed when she was a child, because she simply doesn't want someone else – particularly a younger witch – going through what she did.

She doesn't want anyone to go through what her mother put her through. And that's a choice.

Because there are a number of ways a character can deal with trauma: they can lash out and bring others down, wanting others to experience to the pain they went through, or they can realise that what happened to them shouldn't happen to anyone else in their position.

There's something beautifully self-serving but also selfless in that, because this is a way for Agatha to heal from her trauma. She can tell Billy things she may not be able to tell herself.

And it's interesting because as a self-serving villain, Agatha could just be jealous of Billy's power. But in this moment at least, Agatha's empathy and compassion – as buried as they usually are – prevail.

And yes, Agatha was fond of kid Billy

This is what Schaeffer touched on in her interview answer and it makes sense, with the insight that Agatha – like any good actor – does invest a bit of herself in every role she plays.

Agatha does have feelings (as much as they might make her vomit) and I do believe she has a soft spot when it comes to kids, given her experience with her son and her own childhood trauma. And that kids don't have the level of hypocrisy and darkness that adults do.

It makes sense that Agatha would have some level of care about the Scarlet Witch's magical kid Billy. And that is a fondness that has carried onto teenage Billy – who is powerful and a survivor and has a potential for darkness in a way she can relate to.

There are layers and they intersect and it all ties back to how Agatha is incredibly complex and yet consistent as a character.