@givemersspls
I always just thought of Marie as more of an
indentured servant (virtually identical to a slave, except with a certain amount of guaranteed rights like food, shelter...etc, according to a contract/agreement) considering that she is being paid a wage and has the ability to literally buy herself eventually if she saves up
--thus, has the right to own personal possessions, like money in this case. So with those more rights, I can imagine the bank situation, especially since indentured servitude was mostly made up of people with debt who sold themselves to indentured servitude or family members selling them to
debt-bondage, a practice that has existed in ancient times. And when there is debt, there is money to be made/exploited by banks that are more than happy to
take hold your money, to create more debt slaves. Now that I think about it...not much has changed since ancient times.
Otherwise, I can chalk it up to just Havel speaking from higher social position than Marie with him having nobility soldier status, and thus having a different point of view. Then there's also the option of him just holding her money for her, given that his ultimate goal is to free her from his father. Personally, I don't really think it really requires all that much thought put into it, with suspension of disbelief and all that.