Who is in charge of the festivities?

Marija Berczynskas is in charge of the wedding festivities.

The occasion rested heavily upon Marija's broad shoulders—it was her task to see that all things went in due form, and after the best home traditions; and, flying wildly hither and thither, bowling every one out of the way, and scolding and exhorting all day with her tremendous voice, Marija was too eager to see that others conformed to the proprieties to consider them herself.