
No, Medea doesn't want the power in the first place. She is happy just to be with her brother's side but as what she observed her brother is struggling so she help him in every way she can. Then she saw that her father is discontented about her brother's doing even tho she knows her brother did everything. The day her brother leave there house is the day Medea decided to be the head and have the power to revenge her father.

Really? I thought medea has always been a bit bitter about the fact that she couldn't get power, wasn't she marrying the prince for power??? She didn't decide the day her brother left she decided after the whole ordeal with psych
Also i think Medea is not a bad person but I definitely don't think she was happy just being by her brother's side
She couldn't even relate to him, Medea is different from him and that's OK. She's not selfless and selfsacrificing she is practical
Also she stopped hanging out with him for a few years once they grew up so I don't think her goal was to be by her brother's side
She wanted to be the successor...
The awkwardness maybe stemmed from a bit of envy since she was more intelligent and strategic yet he gets the power like her useless father
Idk