Even if she plays everything like it's for Emi or for her revenge, you can't think of all these things without being a good person yourself. Remi may want to say it's an act, but she's a good bean!!
Well we do see at the beginning that Emi's 'emotions and memories' literally flowed through her, so i'm sure it's influenced her as well
It's nice to see her take on "I'll screw over everyone by being the ideal woman Emi thinks I am" that ends up helping more ppl versus the 'original' Villainess Remilia burning the world (well, 'poisoning with miasma')
Although while i'm sure some ppl would wanna see more bloodlust (or the prince being punched at least once versus being 'humiliated' even if he doesn't get 'executed'/exiled), ruining their social life (esp as like a 'noble' back then) does have its own satisfaction, since someone's reputation being trashed might be 'worse' than death for some ppl, i wouldn't be surprised if one of the 'harem' guys ended up committing suicide b/c of it but i don't think the novel got that dark or so