clipped from: edition.cnn.com   
(CNN) -- The family of a 20-year-old Brazilian model who is fighting for her life after having her hands and feet amputated have urged her supporters around the world to keep praying for their daughter.

"Continue praying for her. The doctors are doing everything that is humanly possible to save her, but only God can really save your (sic) life," says the most recent post by Renato Lindgren.

Da Costa's boyfriend, Thiago Simoes, told the G1 news Web site that Bridi fell ill on December 30 and was initially misdiagnosed with kidney stones.

When her condition worsened she returned to hospital where doctors determined she was suffering from a severe urinary tract infection.

By then, Bridi was also suffering from septicimea, a blood infection that limited the supply of oxygen to her extremities.

The condition forced doctors to amputate first her hands and then her feet.