@Marx
Indeed, through Spike, the Princesses can pretty much make her do anything now. Torch seemed like a neutral ruler, either his age or his personality made it so dragons didn’t attack Equestria, cause as we’ve seen, without Spike Garble would’ve won, and he’s a warmonger.
So dragon leadership went from someone that just doesn’t care, to someone that’s best pals with Spike, and as a result the princesses. If she even tries attacking Equestria (which she won’t because of her personality alone), Spike simply has to bring up how her being a leader in the first place was thanks to him.
Plus, given how only teenage dragons were able to participate for leadership, I seriously doubt she’ll be overthrown. Soooo yeah, she’s as close to a puppet ruler as can be.