I don't understand Isis at all, she doesn't consider Seth her brother but want to kill him even is she had beautiful memories with him as a peaceful family. Then, she want to take revenge or even kill Osiris for his betrayal but when she thinks about the past her filings are "conflicted"... GIRL, he cheated on you and you are "conflicted"?! And I know that Seth made some years of your life a true hell but does it really should end with the EXTERMINATION of Seth ?! Just send him to Duat or I don't know... take him to the psy. TALK WITH HIM !!! fu*k... and we already know thet Isis is not a really good goddess neither because of how tyrannical she is with the others powerless gods. ( ̄へ ̄)
Isis is conflicted because she knows her husband osiris is the one at fault but she can not be angry with him because she loves him. even after he raped seth and had a child with nepth 1st she still loves him enough to have horus. yet she uses horus as a tool to rule the entire thing shes willing to use anything to be queen. shes afraid if seth were to die and go to duat seth and osiris will be reunited and they will start an affair. thats why she wants seths soul dissolved so osiris the god of souls wont be able to have seth.
Well Seth tried to murder her and her child, rape her, trapped her and more... Isis acknowleges Osiris and Seth as her family and as "good" but that's on the past, she has moved on. Also you forget that Osiris is a manipulator, it's hard to break free from the cycle of lies, he was good to her and horrible to Seth, it takes time and a lot of willpower to unite those perspectives and break free, i think at this point of the story she is 90% free of Osiris influence.
For Seth she hates him from what he did after, and wants revenge for that.
Just imagine she take him by his hair and show him his son smiling at him (who is a failure for him).
Just imagine (⌒▽⌒)