Ever since Briana DeJesus joined the cast of Teen Mom 2, her storyline has been more about relationships than actually being a mom.
Last season, we saw her dealing with Luis Miguel, a guy who impregnated her after a hookup.
They tried to give dating a go, but it didn't work out, and things got so messy between them that at one point Briana was even contemplating placing their child for adoption.
We also saw her struggle to coparent with Devoin Austin, the father of her older daughter, Nova.
He wanted to spend more time with Nova, but Briana didn't feel comfortable with it, and then Briana's mother, Roxanne, climbed on a table in a restaurant to berate him.
It was a lot to take in, to say the least.
This season, Luis seems to be nearly completely out of the picture, and Devoin hasn't been able to step up, either.
Or at least, that seems to be the case -- the vast, vast majority of Briana's story this season has been her relationship with Javi Marroquin and her feud with Kailyn Lowry.
The point of all this is to say that unlike some of the other moms, Briana's children haven't really been a focus on the show, not really.
Until now, that is.
In this heartbreaking sneak peek for tonight's new episode, Briana's finished her maternity leave and is back at her day job, so her sister and her mother are home caring for her children.
Brittany tends to baby Stella while Roxanne sits down with Nova to do some schoolwork, and she decides to have a conversation about their home life, too.
"Hey, let me ask you something," she says. "You excited about your mom going back to work?"
Nova nods, but when Roxanne asks her if she'll miss her, she says no.
And when she asks her why, she says "Because she doesn't like taking care of me, she likes taking care of Stella."
"You think she likes to take care of Stella?" Roxanne asks. "But wait wait wait wait wait, you know why she takes care of Stella, right?"
Nova says that she knows Stella is a baby, and Roxanne tells her that she still takes care of her anyway, and so does Grandma and Ti Ti.
"But Ti Ti doesn't because she's too lazy," Nova whispers as Brittany drinks some juice in the background.
"A little bit," she acknowledges, "but I take care of you, right? So you have a lot of us taking care of you."
Unfortunately, Nova doesn't seem too convinced.
Obviously, this is totally normal -- Briana's not doing anything wrong here.
Nova is feeling a little jealous of her baby sister, but Briana has to give her a different kind of attention, and good on her for not quitting her job even though she's back on MTV.
Still, this is really sad to see. Nova is so sweet, so to see her hurting is tough.
Hopefully when we see the full episode, Briana will help to make her feel a little better with all the changes going on in their family.
In the meantime, let poor little Nova break your heart, too, by watching the clip below: