Only the slight issue of Marso wanting luxury. High end sweets, servants, money and modern world items which could be difficult to obtain but I’m honestly jealous of her position. I want that. I’m lazy so I would fit in perfectly ( ̄∇ ̄")
They are not lovers to elope what he wanted was to prevent her from becoming miserable not being together. And prologue seems to indicate they are going to leave together eventually
Or Darcy can just use his powers to set Marso from the engagement then both of them can go far away and live happily ever after. The end.