SCristina Warthen, née Schultz, aka Brazil, has been charged with the crime of federal tax evasion stemming from $25,424 in unpaid taxes in income earned as an escort in 2003. A previous civil case stemming from a seizure of $61,000 in cash from her Oakland apartment in 2004 after authorities found her bragging about her income on escort service message boards was settled in 2006. Warthen is married to Ask.com cofounder David Warthen, who had asserted the cash on hand was a gift to his then girlfriend. Prosecutors allege that the Stanford Law graduate earned $133,717 in 2003 and took home $81,797 after expenses, for which she owes federal income tax. Warthen has a date scheduled at the federal district court in San Jose later this month.