I...honestly just feel pity for Rashta now. She's doing her best to survive as a slave-turned-imperial mistress. She may not know what the fuck she's doing, but so far hasn't done anything truly malicious iirc, only petty. I'm gonna guess it's her *blackmailing former slave master* who comes up the divorce in chapter 1.
It's the emperor who's forced both of them into these weird roles in the first place with his nonsense.
ALSO, I love how the writer either forgot that a woman's body visibly changes, most notably the belly skin, after pregnancy or the emperor is just that stupid to not notice.