it still looks like we're heading for Sharon to be a Quaestor while the MC plays waiter to the ancient and an enforcer for the current Princeps. I don't see the MC being the Princeps, suddenly jumping above Sharon in standing, as it would feel way too forced/rushed without more than 5 episodes.
Sharon is barely, if at all, suited to rule that little town, she is too young and way too weak for any other position...her being a Archon is already generous (and even that she has only thanks to Calisto).
No one, certainly no elder, would take her serious...neither has she much insight in vamp politics...
who in his right mind would make her Quaestor...
If the MC has fought Marcius, he has at least more respect and a higher standing with the elders than Sharon ever had.