I feel bad for the son because he's not her type. She prefers older men and I'm pretty sure he's either younger than her or very close age to her.
R.I.P. His heart for his Step Mother (The Wife of Prime Minister probably will only treat him as her son/kid/child)
R.I.P. The Father for his Son Liking his (Prime Minister) Wife, Wishing for him to die sooner (Prime Minister's son wishing for the Prime Minister to die sooner), and Plan to make his (Prime Minister) Wife fall in Love with Him (The son of the Prime Minister)
Sorry, it's a bit confusing