Would They Ever Hurt Hannah to Get Back At June?

I’ve only watched the first 10 episodes, and I’m confused about why Serena Joy would allude to Hannah being hurt if June steps out of line again. The Mackenzies wouldn’t actually let Hannah be hurt or killed, right? Hurting a child seems like one of the worst offenses in Gilead.

If I can recognize that, shouldn’t June also realize it? Serena says Hannah is cared for and loved, which doesn’t mean much to June coming from her, but from what we see in the car, Hannah does look well cared for and is to my knowledge.

Does this line of thinking make sense, or am I just not fully in the mindset of the characters yet?

Feel free to share any lore, even if it isn’t from season one. I don’t mind spoilers. I’ve already done a lot of Googling about how Gilead works, and my mom has this show on repeat in my house anyway.