>>91193426So much to do, so little time. I would imagine her first priority is to ensure Star is safe, then check on the current status of the kingdom. That'll likely involve getting in contact with River, be it direct or indirect, to know if the castle is a safe place to hold-up in the wake of Toffee's empowered form. If it is, they'll likely go there and turtle up. If not, then she'll likely lay low with Star and try to get the magic high commission back in order.
>Currently, what's stopping Toffee from kidnapping Marco and trading him for the finger?This is a difficult one, as it could be said that Marco is now in incredible danger with no one there to protect him, though in the face of current Toffee, Star would likely be unable to defend him herself. He does have his dimensional scissors, so he could theoretically escape, but then there's people he cares about present that Toffee would have little issue threatening for his return.
There's a distinct chance he could seek out Marco, if he's not too busy on Mewnie doing whatever it is he's got planned. Until we know what his direct plan of action is though, we can only speculate.
