But expensive holidays, ranging from a girls- only trip to Ibiza to a break in Dubai with her boyfriend Kyle Johnson, appear to show that she is now dipping deep into the fund, estimated at £5.5million.
Devon-born Joss, who was discovered when she won the BBC's Junior Star For A Night, showed her determined streak earlier this year by sacking her mother as manager in favour of a more experienced person.
Would-be svengalis were put in their place about who was going to be boss.
Recalling her interviews for a new manager, Joss said: 'This one guy told us that I need to be sexed up a bit. Sorry, but I'm not about to take my clothes off for anybody.'