The word until is being used as a preposition in the sentence above
Meaning and synonyms hope this helps :)
Ebenezer Scrooge is the protagonist (main character) of ‘A Christmas Carol’. He is a banker or ‘moneylender’ of sorts who owned his own ‘counting house’ alongside his late business partner Jacob Marley.
In the opening of the novella, Scrooge is presented as a miserly and misanthropic (someone who dislikes other people) businessman with a strong aversion to Christmas and the society around him in general. :)
I hope this helps
If the mother goes to the capital to give her speech she would take the kids with her or leave them at home