FORMER BEAUTY contestant Krisana “Mona” Suwanpitak was jailed for life yesterday after the Ratchadapisek Criminal Court in Bangkok found her guilty of the 2012 murder of her 16-year-old maid, Jariya Srisak. The girl’s body was then buried near Krisana’s home in Phetchaburi’s Muang district to conceal the crime.