With regard to "wealth": It is self-understood and quite plain that if a Jewish daughter who has reached the age of a
shidduch has wealth it is not a result of her own doing (she worked and saved enough money to become wealthy), rather it is because her family is wealthy.
During the last few generations, the difficulty of exile, etc., has given rise to a "new custom," that Jewish daughters go out before their wedding to work and earn money! Such a thing never occurred during those years when matters were in their proper order, at which time Jewish daughters conducted themselves in a manner of "The entire glory of a king's daughter is inward."
All types of "reasons" are presented to explain the benefits accrued by this new "custom," among them - that when she will earn money then her husband will be able to study in Kollel after their marriage... And other similar reasons are given. But what is forgotten is that if the Jewish daughter were to conduct herself in a manner of "The entire glory of a king's daughter is inward," then this would assist the Torah study of her Choson and husband.
It is not worthwhile speaking about this at length, since this "custom" has spread to all segments of the Jewish population, including those who conduct themselves in a manner of "Mehadrin min HaMehadrin." So that speaking about negating this practice comes under the heading of "A decree the community will not be able to accept."
Excerpt from a Sicha of the Rebbe, 15 Av, 5743