Sorry to keep you waiting. First I had to take some screenshots and then my laptop's battery was always on the verge of giving out, so I couldn't just sit down and answer sooner.
But honestly, yeah! I actually wanted to point that out too!
Compared to the rest of the Brotherhood of the Forgotten, Dathura's disappearance is just plain weird. I watched an interview where Tot revealed that, unlike what the Kickstarter trailer might suggest, the demigods wouldn't really play a major role in season 4. And honestly, that's fair. Given the show is about the Brotherhood or the Tofu and, more importantly, they had just learned their purpose in life ended up being their being manipulated by a megalomaniac with daddy issues, realistically, I wouldn't want to have anything to do with action for a while either.
There's of course the fact that each of them asked to be sent to completely different locations and had very different goals. For example, Coqueline, Kali, and Sipho just wanted to pick up the pieces of what Oropo and especially Echo started and live as a family. And despite both of them ending up in Bonta, Ush wanted nothing to do with Black Bump.
Which makes Dathura's disappearance from the main plot all that weirder. Because she is about the only demigoddes who has any business participating in the main plot by virtue of her actually being there.
Seriously, once again, the Sadida Kingdom is at the very centre of everything. They're the Nécromes main, or at least first, target. And yet, there is no sign of Dathura helping out as the powerful demigoddess she is despite her accepting Amalia's invitation to live in the kingdom and even going as far as remaining by her side the entirety of the third episode.
She was never even introduced to Armand and Aurora despite both of them being there when Amalia returned with her. Made all the more jarring by the fact that she remained by the princess' side even as she mourned her father's death and the next day (?) she just...vanishes with no explanation?
Seriously, out of all of the members of the Forgotten, the two with the most reason to have a bigger role in season 4 are Dathura and Ush. The former because she is supposed to be living there at the time of the Nécromes' attack, and the latter because he was the one who informed Joris of what was going on.
In Ush's case I can understand he decides to stay on the sidelines since he isn't exactly a hero, he mostly just does his own thing. But Dathura's disappearance can be very jarring.
What, did she awkwardly leave Amalia to mourn her father while she went to check in on Ogrest?
Oh, well. The season's been great so far and I don't really have any trouble with this. It's just weird, it's all.