That could be seen as her purchasing the weapons from Van for her own use. He gets some credit as the maker, but she gets the glory of saving her family.
idk why then that would even save her family.
by medieval standards, Arte is socially no longer a part of her family once she is sent to be engaged to Van. Political betrothals were a disownment + attempt at making a connection. The disownment happened regardless of if the attempt was successful or not.
But she didn’t get engaged to Van yet so she’s not a part of his family either, or any family whatsoever; she’s now (socially) an independent in the eyes of the nobility, similar to how panamera is a noble without land
If she does achievements with the doll, the king should make her a baron. Which dooms her family’s house even more, if Baron Arte who bought Baron Van’s doll is doing more work than Daddy Marquis
It’s an even worse look if 2 low level noble children have more fighting power and political ability than a high level noble adult with decades of experience