lololol lots of questions.
And yeah I would redo the character build for max persuasion and manipulation. Although inviting Sayra to events is a waste of an invite, expect if it's girls night or the board game night (she'll come) I think it'll boost her opinion of u. Also having max insight is necessary for 'I know Sayra can help herself' option when she's confronting a rude nobleman.
Having Kaytia's legacy as an ambition improves the rebels favour towards you a bit.
I think also having commoners favour helps with the favour.