Barbara Simmons purchased $100$ shares of Home Depot stock for $\backslash (\backslash$$ $187\backslash )$ per share, using as little of her own money as she could. Her broker has a $\backslash (55\backslash \%\backslash )$ initial margin requirement and a $\backslash (45\backslash \%\backslash )$ maintenance margin requirement. If the price of Home Depot stock falls to $\backslash (\backslash$$ $142\backslash )$ per share, what does Barbara need to do$?$