The 20-year-old former boarding school girl from Surrey has apparently disappointed her mum and dad, who have previously blocked her attempts to go on reality TV shows.
"They were horrified when she auditioned, and even more so when she won a place," a source told Star magazine.
"They think it's so tacky and could harm her future career."
Caroline describes herself as "weird, embarrassing and a bit of a loser", and lists her only previous job as being a street charity worker, which her parents made her do when she dropped out of university.
Big Brother continues daily on Channel 5.
Lauren Carre and Luke Anderson are the two housemates facing eviction this week.
Photo Gallery - The latest action from the Big Brother house: