No. If they actually care about him, they should've told asrahan straight, not by neglecting his guest like that. It's as if they want's lariette's situation to be dire and something bad happen to her (basically getting rid of her), so they don't need to come and tell asrahan eye-to-eye that they don't like her.
I don't like lariette, i think she's a dumb fl and almost droping this manhwa just because how she act (i even skip the ch where she run away up until when she almost died in the desert). But still, she doesn't deserve this from someone who owe a lot her. What they did is just ungrateful and evil, to both lariette and to asrahan.
Lariette's desperate situation doesn't take away from the fact that Ashram has suffered from a curse since childhood, has been neglected and shunned due to this curse for his entire life and is also the King's dog. Meaning he's the first to go to war and is always in danger of dying a horrible death on the battlefield. His staff are like his day ones. Many on his staff have watched him suffer for years. Lariette is a relative new comer and the staffs allegiance would obviously be for their Lord first because they saw him once again suffering from her leaving him. Just like our day ones would automatically side and suffer with us. (Unless yall dont have friends). Is Lariette wrong for how she went about EVERYTHING? Absolutely. Regardless of her own situation,
she lead Ashram on and had many chances to tell the truth. Her feelings were conflicted, but Ashram was all in for her. Her leaving with Doha wasn't a good look for her at all. Is she an irredeemable character? Not in the least. But just like how people feel male lead characters should suffer for their actions and treatment of a FL, the same rule applies here.