Arnold Schwarzenegger, Maria Shriver at War

Maria Shriver was reportedly "hysterical" after learning about Arnold Schwarzenegger's love child and wanted to call a press conference immediately.

Sources tell TMZ that Maria friends talked her out of the idea of calling a press conference and instead discretely leaked the scandal to the L.A. Times and TMZ.

TMZ sources say Arnold is aware that Maria's camp went to the press and is upset that Maria has been discussing the scandal with her friends.

Though Maria found out about Arnold's son with former household help Mildred Patty Baena in end April or early May, she had been contemplating divorce for the past 2 years. In January, she had contacted a Beverly Hills realtor while looking for a upmarket condo.

Maria, 55, is now determined to go ahead with a divorce, belying earlier reports that she wasn't sure about her future course of action since the Catholic Church frowns upon divorce.

As reported earlier, she has engaged family law powerhouse attorney Laura Wasser. Maria reportedly hired Laura before Arnold fessed up about his love child. is now reporting that a lawyer for Maria has hired a private investigator to probe Arnold's philandering and finances. Maria is keen to know just how much is Arnold worth and whether he has other children out of wedlock as is being rumored. Also, how much did he spend on her mistress and son.

According to Radar Online, the couple has a pre-nuptial.