Did I miss something between the 12th and 13th chapter, or am I just a dumbass?

no. you missed nothing. it was intentional.
Rykell doesn't give a damn about his main family (Cyclamen) + empire and continues to mind his own business (aka raising maybelle) before Kyle visits him.

Rykell and his crew in northern mansion treated the big ruckus in Cyclamen mansion as a speck of dirt and returns to their usual daily routine. Maybelle felt uneasy at first but she chooses to go with the flow XD.