Really disliked that we have not some choice to prevent the marriage, both of them, MC's as well as Elin...
Aurora is ok but not interested in her, Isis you need to keep on the lookout for a dagger or poison when the situation benefits her...
On the other hand killing Cass was nice. A waste, i liked her idea of getting rid of the king, but i don't trust or like her at all and would never give her all the power of the council or more.
Also her reaction to when the MC is announced heir. It should be possitive for her plan, after all it would give the MC all the more legitimacy when he is regent, so good all around if we believe her...
On the other hand, if her plan is be queen herself that reaction and how she advices/wants the MC to be constant rebellious and break traditions infront of the nobels and people makes a lot more sense (show him in a bad light), as well as bringing all her allies in power.
Also the mage background seems really weak...like can the MC actually do ANY useful magic ?
When i choose mage i thought more about a classic battle-mage, you know fireballs and lightning,teleporting etc...yet all we get is pretty lights.